case study examples for job interview

47 case interview examples (from McKinsey, BCG, Bain, etc.)

One of the best ways to prepare for   case interviews  at firms like McKinsey, BCG, or Bain, is by studying case interview examples. 

There are a lot of free sample cases out there, but it's really hard to know where to start. So in this article, we have listed all the best free case examples available, in one place.

The below list of resources includes interactive case interview samples provided by consulting firms, video case interview demonstrations, case books, and materials developed by the team here at IGotAnOffer. Let's continue to the list.

• McKinsey examples
• BCG examples
• Bain examples
• Deloitte examples
• Other firms' examples
• Case books from consulting clubs
• Case interview preparation

Click here to practise 1-on-1 with MBB ex-interviewers

1. mckinsey case interview examples.

• Beautify case interview (McKinsey website)
• Diconsa case interview (McKinsey website)
• Electro-light case interview (McKinsey website)
• GlobaPharm case interview (McKinsey website)
• National Education case interview (McKinsey website)
• Talbot Trucks case interview (McKinsey website)
• Shops Corporation case interview (McKinsey website)
• Conservation Forever case interview (McKinsey website)
• McKinsey case interview guide (by IGotAnOffer)
• Profitability case with ex-McKinsey manager (by IGotAnOffer)
• McKinsey live case interview extract (by IGotAnOffer) - See below

2. BCG case interview examples

• Foods Inc and GenCo case samples  (BCG website)
• Chateau Boomerang written case interview  (BCG website)
• BCG case interview guide (by IGotAnOffer)
• Written cases guide (by IGotAnOffer)
• BCG live case interview with notes (by IGotAnOffer)
• BCG mock case interview with ex-BCG associate director - Public sector case (by IGotAnOffer)
• BCG mock case interview: Revenue problem case (by IGotAnOffer) - See below

3. Bain case interview examples

• CoffeeCo practice case (Bain website)
• FashionCo practice case (Bain website)
• Associate Consultant mock interview video (Bain website)
• Consultant mock interview video (Bain website)
• Written case interview tips (Bain website)
• Bain case interview guide   (by IGotAnOffer)
• Digital transformation case with ex-Bain consultant
• Bain case mock interview with ex-Bain manager (below)

4. Deloitte case interview examples

• Engagement Strategy practice case (Deloitte website)
• Recreation Unlimited practice case (Deloitte website)
• Strategic Vision practice case (Deloitte website)
• Retail Strategy practice case  (Deloitte website)
• Finance Strategy practice case  (Deloitte website)
• Talent Management practice case (Deloitte website)
• Enterprise Resource Management practice case (Deloitte website)
• Footloose written case  (by Deloitte)
• Deloitte case interview guide (by IGotAnOffer)

5. Accenture case interview examples

• Case interview workbook (by Accenture)
• Accenture case interview guide (by IGotAnOffer)

6. OC&C case interview examples

• Leisure Club case example (by OC&C)
• Imported Spirits case example (by OC&C)

7. Oliver Wyman case interview examples

• Wumbleworld case sample (Oliver Wyman website)
• Aqualine case sample (Oliver Wyman website)
• Oliver Wyman case interview guide (by IGotAnOffer)

8. A.T. Kearney case interview examples

• Promotion planning case question (A.T. Kearney website)
• Consulting case book and examples (by A.T. Kearney)
• AT Kearney case interview guide (by IGotAnOffer)

9. Strategy& / PWC case interview examples

• Presentation overview with sample questions (by Strategy& / PWC)
• Strategy& / PWC case interview guide (by IGotAnOffer)

10. L.E.K. Consulting case interview examples

• Case interview example video walkthrough   (L.E.K. website)
• Market sizing case example video walkthrough  (L.E.K. website)

11. Roland Berger case interview examples

• Transit oriented development case webinar part 1  (Roland Berger website)
• Transit oriented development case webinar part 2   (Roland Berger website)
• 3D printed hip implants case webinar part 1   (Roland Berger website)
• 3D printed hip implants case webinar part 2   (Roland Berger website)
• Roland Berger case interview guide   (by IGotAnOffer)

12. Capital One case interview examples

• Case interview example video walkthrough  (Capital One website)
• Capital One case interview guide (by IGotAnOffer)

12. EY Parthenon case interview examples

• Candidate-led case example with feedback (by IGotAnOffer)

14. Consulting clubs case interview examples

• Berkeley case book (2006)
• Columbia case book (2006)
• Darden case book (2012)
• Darden case book (2018)
• Duke case book (2010)
• Duke case book (2014)
• ESADE case book (2011)
• Goizueta case book (2006)
• Illinois case book (2015)
• LBS case book (2006)
• MIT case book (2001)
• Notre Dame case book (2017)
• Ross case book (2010)
• Wharton case book (2010)

Practice with experts

Using case interview examples is a key part of your interview preparation, but it isn’t enough.

At some point you’ll want to practise with friends or family who can give some useful feedback. However, if you really want the best possible preparation for your case interview, you'll also want to work with ex-consultants who have experience running interviews at McKinsey, Bain, BCG, etc.

If you know anyone who fits that description, fantastic! But for most of us, it's tough to find the right connections to make this happen. And it might also be difficult to practice multiple hours with that person unless you know them really well.

Here's the good news. We've already made the connections for you. We’ve created a coaching service where you can do mock case interviews 1-on-1 with ex-interviewers from MBB firms . Start scheduling sessions today!

Related articles:

Hacking the Case Interview

We’ve compiled 50 case interview examples and organized them by industry, function, and consulting firm to give you the best, free case interview practice. Use these case interview examples for practice as you prepare for your consulting interviews.

If you’re looking for a step-by-step shortcut to learn case interviews quickly, enroll in our case interview course . These insider strategies from a former Bain interviewer helped 30,000+ land consulting offers while saving hundreds of hours of prep time.

Case Interview Examples Organized by Industry

Below, we’ve linked all of the case interview examples we could find from consulting firm websites and YouTube videos and organized them by industry. This will be helpful for your case interview practice if there is a specific consulting industry role that you are interviewing for that you need more practice in.

Aerospace, Defense, & Government Case Interview Examples

• Agency V (Deloitte)
• The Agency (Deloitte)
• Federal Finance Agency (Deloitte)
• Federal Civil Cargo Protection Bureau (Deloitte)

Consumer Products & Retail Case Interview Examples

• Electro-light (McKinsey)
• Beautify (McKinsey)
• Shops Corporation (McKinsey)
• Climate Case (BCG)
• Foods Inc. (BCG) *scroll to bottom of page
• Chateau Boomerang (BCG) *written case interview
• PrintCo (Bain)
• Coffee Co. (Bain)
• Fashion Co. (Bain)
• Recreation Unlimited (Deloitte)
• Footlose (Deloitte)
• National Grocery and Drug Store (Kearney)
• Whisky Co. (OC&C)
• Dry Cleaners (Accenture) *scroll to page 15
• UK Grocery Retail (Strategy&) *scroll to page 24
• Ice Cream Co. (Capital One)

Healthcare & Life Sciences Case Interview Examples

• GlobaPharm (McKinsey)
• GenCo (BCG) *scroll to middle of page
• PrevenT (BCG)
• MedX (Deloitte)
• Medical Consumables (LEK)
• Medicine Company (HackingTheCaseInterview)
• Pharma Company (Indian Institute of Management)

Manufacturing & Production Case Interview Examples

• Aqualine (Oliver Wyman)
• 3D Printed Hip Implants (Roland Berger)
• Talbot Trucks (McKinsey)
• Playworks (Yale School of Management)

Social & Non-Profit Case Interview Examples

• Diconsa (McKinsey)
• National Education (McKinsey)
• Conservation Forever (McKinsey)
• Federal Health Agency (Deloitte)
• Robinson Philanthropy (Bridgespan)
• Home Nurses for New Families (Bridgespan)
• Reach for the Stars (Bridgespan)
• Venture Philanthropy (Bridgespan)

Technology, Media, & Telecom Case Interview Examples

• NextGen Tech (Bain)
• Smart Phone Introduction (Simon-Kucher)
• MicroTechnos (HackingTheCaseInterview)

Transportation Case Interview Examples

• Low Cost Carrier Airline (BCG)
• Transit Oriented Development (Roland Berger)
• Northeast Airlines (HackingTheCaseInterview)
• A+ Airline Co. (Yale School of Management)
• Ryder (HackingTheCaseInterview)

Travel & Entertainment Case Interview Examples

• Wumbleworld (Oliver Wyman)
• Theater Co. (LEK)
• Hotel and Casino Co. (OC&C)

Case Interview Examples Organized by Function

Below, we’ve taken the same cases listed in the “Case Interview Examples Organized by Industry” section and organized them by function instead. This will be helpful for your case interview practice if there is a specific type of case interview that you need more practice with.

Profitability Case Interview Examples

To learn how to solve profitability case interviews, check out our video below:

Market Entry Case Interview Examples

Merger & acquisition case interview examples.

Growth Strategy Case Interview Examples

Pricing case interview examples.

New Product Launch Case Interview Examples

Market sizing case interview examples.

To learn how to solve market sizing case interviews, check out our video below:

Operations Case Interview Examples

Other case interview examples.

These are cases that don’t quite fit into any of the above categories. These cases are the more unusual, atypical, and nontraditional cases out there.

Case Interview Examples Organized by Consulting Firm

Below, we’ve taken the same cases listed previously and organized them by company instead. This will be helpful for your case interview practice if there is a specific company that you are interviewing with.

McKinsey Case Interview Examples

BCG Case Interview Examples

Bain Case Interview Examples

Deloitte Case Interview Examples

Lek case interview examples, kearney case interview examples, oliver wyman case interview examples, roland berger case interview examples, oc&c case interview  examples, bridgespan case interview examples, strategy& case interview examples, accenture case interview examples, simon kutcher case interview examples, capital one case interview examples, case interview examples from mba casebooks.

For more case interview examples, check out our article on 23 MBA consulting casebooks with 700+ free practice cases . There additional cases created by MBA consulting clubs that make for great case interview practice. For your convenience, we’ve listed some of the best MBA consulting casebooks below:

• Australian Graduate School of Management (2002)
• Booth (2005)
• Columbia (2007)
• Darden (2019)
• ESADE (2011)
• Fuqua (2018)
• Goizueta (2006)
• Haas (2019)
• Harvard Business School (2012)
• Illinois (2015)
• INSEAD (2011)
• Johnson (2003)
• Kellogg (2012)
• London Business School (2013)
• McCombs (2018)
• Notre Dame (2017)
• Queens (2019)
• Ross (2010)
• Sloan (2015)
• Stern (2018)
• Tuck (2009)
• Wharton (2017)
• Yale (2013)

Consulting casebooks are documents that MBA consulting clubs put together to help their members prepare for consulting case interviews. Consulting casebooks provide some case interview strategies and tips, but they mostly contain case interview practice cases.

While consulting casebooks contain tons of practice cases, there is quite a bit of variety in the sources and formats of these cases.

Some practice cases are taken from actual consulting interviews given by consulting firms. These are the best types of cases to practice with because they closely simulate the length and difficulty of an actual case interview. Other practice cases may be written by the consulting club’s officers. These cases are less realistic, but can still offer great practice.

The formats of the practice cases in consulting casebooks also vary significantly.

Some practice cases are written in a question and answer format. This type of format makes it easy to practice the case by yourself, without a case partner. Other practices cases are written in a dialogue format. These cases are better for practicing with a case interview partner.

MBA consulting casebooks can be a great resource because they are free and provide tons of practice cases to hone your case interview skills. However, there are several caveats that you should be aware of.

• Similarity to real case interviews : Some cases in MBA consulting casebooks are not representative of actual case interviews because they are written by consulting club officers instead of interviewers from consulting firms
• Quality of sample answers : While consulting casebooks provide sample solutions, these answers are often not the best or highest quality answers
• Ease of use : Consulting casebooks are all written in different formats and by different people. Therefore, it can be challenging to find cases that you can consistently use to practice cases by yourself or with a partner

Therefore, we recommend that you first use the case interview examples listed in this article and wait until you’ve exhausted all of them before using MBA consulting casebooks.

Case Interview Examples from HackingTheCaseInterview

Below, we've pulled together several of our very own case interview examples. You can use these case interview examples for your case interview practice.

1. Tech retailer profitability case interview

2. Airline profitability case interview

3. Ride sharing app market entry

4. Increasing Drug Adoption

How to Use Case Interview Examples to Practice Case Interviews

To get the most out of these case interview examples and maximize your time spent on case interview practice, follow these three steps.

1. Understand the case interview structure beforehand

If case interviews are something new to you, we recommend watching the following video to learn the basics of case interviews in under 30 minutes.

Know that there are seven major steps of a case interview.

• Understanding the case background : Take note while the interviewer gives you the case background information. Afterwards, provide a concise synthesis to confirm your understanding of the situation and objective
• Asking clarifying questions : Ask questions to better understand the case background and objective
• Structuring a framework : Lay out a framework of what areas you want to look into in order to answer or solve the case
• Kicking off the case : Propose an area of your framework that you would like to dive deeper into 
• Solving quantitative problems : Solve a variety of different quantitative problems, such as market sizing questions and profitability questions. You may also be given charts and graphs to analyze or interpret
• Answering qualitative questions : You may be asked to brainstorm ideas or be asked to give your business opinion on a particular issue or topic
• Delivering a recommendation : Summarize the key takeaways from the case to deliver a firm and concise recommendation

2. Learn how to practice case interviews by yourself 

There are 6 steps to practice case interviews by yourself. The goal of these steps is to simulate a real case interview as closely as you can so that you practice the same skills and techniques that you are going to use in a real case interview.

• Synthesize the case background information out loud : Start the practice case interview by reading the case background information. Then, just as you would do in a live case interview, summarize the case background information out loud
• Ask clarifying questions out loud : Just as you would do in a live case interview, ask clarifying questions out loud. Although you do not have a case partner that can answer your questions, it is important to practice identifying the critical questions that need to be asked to fully understand the case
• Structure a framework and present it out loud : Pretend that you are in an actual interview in which you’ll only have a few minutes to put together a comprehensive and coherent framework. Replicate the stress that you will feel in an interview when you are practicing case interviews on your own by giving yourself time pressure.

When you have finished creating your framework, turn your paper around to face an imaginary interviewer and walk through the framework out loud. You will need to get good at presenting your framework concisely and in an easy to understand way.

• Propose an area to start the case : Propose an area of your framework to start the case. Make sure to say out loud the reasons why you want to start with that particular area
• Answer each case question out loud : If the question is a quantitative problem, create a structure and walk the interviewer through how you would solve the problem. When doing math, do your calculations out loud and explain the steps that you are taking.

If the question is qualitative, structure your thinking and then brainstorm your ideas out loud. Walk the interviewer through your ideas and opinions.

• Deliver a recommendation out loud : Just as you would do in a real case interview, ask for a brief moment to collect your thoughts and review your notes. Once you have decided on a recommendation, present your recommendation to the interviewer.

3. Follow best practices while practicing case interviews :    

You’ll most likely be watching, reading, or working through these case interview examples by yourself. To get the most practice and learnings out of each case interview example, follow these tips: 

• Don’t have notes or a calculator out when you are practicing since you won’t have these in your actual interview
• Don’t take breaks in the middle of a mock case interview
• Don’t read the case answer until you completely finish answering each question
• Talk through everything out loud as if there were an interviewer in the room
• Occasionally record yourself to understand what you look like and sound like when you speak

4. Identify improvement areas to work on

When the case is completed, review your framework and answers and compare them to the model answers that the case provides. Reflect on how you could have made your framework or answers stronger.

Also, take the time to reflect on what parts of the case you could have done better. Could your case synthesis be more concise? Was your framework mutually exclusive and collectively exhaustive? Could your math calculations be done more smoothly? Was your recommendation structured enough?

This is the most important part of practicing case interviews by yourself. Since you have no partner to provide you feedback, you will need to be introspective and identify your own improvement areas.

At the end of each practice case interview, you should have a list of new things that you have learned and a list of improvement areas to work on in future practice cases. You’ll continue to work on your improvement areas in future practice cases either by yourself or with a partner.

5. Eventually find a case partner to practice with

You can only do so many practice case interviews by yourself before your learning will start to plateau. Eventually, you should be practicing case interviews with a case partner.

Practicing with a case partner is the best way to simulate a real case interview. There are many aspects of case interviews that you won’t be able to improve on unless you practice live with a partner:

• Driving the direction of the case
• Asking for more information
• Collaborating to get the right approach or structure
• Answering follow-up questions

If you are practicing with a case partner, decide who is going to be giving the case and who is going to be receiving the case.

If you are giving the case, read the entire case information carefully. It may be helpful to read through everything twice so that you are familiar with all of the information and can answer any question that your partner asks you to clarify.

As the person giving the case, you need to be the case expert.

You should become familiar with the overall direction of the case. In other words, you should know what the major questions of the case are and what the major areas of investigation are. This will help you run the mock case interview more smoothly.  

Depending on whether you want the case interview to be interviewer-led or candidate-led, you will need to decide how much you want to steer the direction of the case.

If your partner gets stuck and is taking a long time, you may need to step in and provide suggestions or hints. If your partner is proceeding down a wrong direction, you will need to direct them towards the right direction.

Where to Find More Case Interview Examples

To find more case interview examples, you can use a variety of different case interview prep books, online courses, and coaching. We'll cover each of these different categories of resources for more case interview practice in more detail.

Case Interview Prep Books

Case interview prep books are great resources to use because they are fairly inexpensive, only costing $20 to $30. They contain a tremendous amount of information that you can read, digest, and re-read at your own pace.

Based on our comprehensive review of the 12 popular case interview prep books , we ranked nearly all of the case prep books in the market.

The three case interview prep books we recommend using are:

• Hacking the Case Interview : In this book, learn exactly what to do and what to say in every step of the case interview. This is the perfect book for beginners that are looking to learn the basics of case interviews quickly.
• The Ultimate Case Interview Workbook : In this book, hone your case interview skills through 65+ problems tailored towards each type of question asked in case interviews and 15 full-length practice cases. This book is great for intermediates looking to get quality practice.
• Case Interview Secrets : This book provides great explanations of essential case interview concepts and fundamentals. The stories and anecdotes that the author provides are entertaining and help paint a clear picture of what to expect in a case interview, what interviewers are looking for, and how to solve a case interview.

Case Interview Courses

Case interview courses are more expensive to use than case interview prep books, but offer more efficient and effective learning. You’ll learn much more quickly from watching someone teach you the material, provide examples, and then walk through practice problems than from reading a book by yourself.

Courses typically cost anywhere between $200 to $400.

If you are looking for a single resource to learn the best case interview strategies in the most efficient way possible, enroll in our comprehensive case interview course .

Through 70+ concise video lessons and 20 full-length practice cases based on real interviews from top-tier consulting firms, you’ll learn step-by-step how to crush your case interview.

We’ve had students pass their consulting first round interview with just a week of preparation, but know that your success depends on the amount of effort you put in and your starting capabilities.

Case Interview Coaching

With case interview coaching, you’ll pay anywhere between $100 to $300 for a 40- to 60-minute mock case interview session with a case coach. Typically, case coaches are former consultants or interviewers that have worked at top-tier consulting firms.

Although very expensive, case interview coaching can provide you with high quality feedback that can significantly improve your case interview performance. By working with a case coach, you will be practicing high quality cases with an expert. You’ll get detailed feedback that ordinary case interview partners are not able to provide.

Know that you do not need to purchase case interview coaching to receive a consulting job offer. The vast majority of candidates that receive offers from top firms did not purchase case interview coaching. By purchasing case interview coaching, you are essentially purchasing convenience and learning efficiency.

Case interview coaching is best for those that have already learned as much as they can about case interviews on their own and feel that they have reached a plateau in their learning. For case interview beginners and intermediates, it may be a better use of their money to first purchase a case interview course or case interview prep book before purchasing expensive coaching sessions.

If you do decide to eventually use a case interview coach, consider using our case coaching service .

There is a wide range of quality among coaches, so ensure that you are working with someone that is invested in your development and success. If possible, ask for reviews from previous candidates that your coach has worked with.

Summary of the Best Consulting Interview Resources

Here are the resources we recommend to land your dream consulting job:

For help landing consulting interviews

• Resume Review & Editing : Transform your resume into one that will get you multiple consulting interviews

For help passing case interviews

• Comprehensive Case Interview Course (our #1 recommendation): The only resource you need. Whether you have no business background, rusty math skills, or are short on time, this step-by-step course will transform you into a top 1% caser that lands multiple consulting offers.
• Case Interview Coaching : Personalized, one-on-one coaching with a former Bain interviewer.
• Hacking the Case Interview Book   (available on Amazon): Perfect for beginners that are short on time. Transform yourself from a stressed-out case interview newbie to a confident intermediate in under a week. Some readers finish this book in a day and can already tackle tough cases.
• The Ultimate Case Interview Workbook (available on Amazon): Perfect for intermediates struggling with frameworks, case math, or generating business insights. No need to find a case partner – these drills, practice problems, and full-length cases can all be done by yourself.

For help passing consulting behavioral & fit interviews

• Behavioral & Fit Interview Course : Be prepared for 98% of behavioral and fit questions in just a few hours. We'll teach you exactly how to draft answers that will impress your interviewer.

Land Multiple Consulting Offers

Complete, step-by-step case interview course. 30,000+ happy customers.

Career in Consulting

280 Free Case Interview Examples

Do you want to get access to over 280 free case interview examples (with answers)?

If you have interviews planned at McKinsey ,  The Boston Consulting Group , or any other consulting firm, you are probably looking for case interview examples.

So, to help you prepare, I have compiled a list of 280 free case interview examples:

• Over 30 free case interview examples (+ interview prep tips) from the websites of top consulting firms
• More than 250 free case interview examples from top business school case books

Moreover, you’ll get  my take on which case studies you will likely have in interviews.

In short, the resources listed hereafter will be very helpful if you are starting out or have already made good progress in preparing for your case interviews.

One last word : check out this free case-cracking course to learn how to crack the most recent types of case questions consulting firms use in actual interviews.

Let’s get started!

Table of Contents

Get the latest data about salaries in consulting, mckinsey: tips and case interview examples.

McKinsey & Company’s website is definitely one of my favorites.

Because this gives so much insightful information about the role of a consultant and what the hiring process looks like.

Therefore, I highly recommend spending time on their website, even if you are not targeting McKinsey.

In the meantime, here are 8 McKinsey case interview examples

• Electro-light
• GlobaPharma
• National Education
• Talbot trucks
• Shops corporation
• Conservation forever

Check out the McKinsey Hub : A library of 20+ free resources that cover everything you need to secure a job offer at McKinsey.

Besides, here is another McKinsey case interview example.

This case interview question has been recently asked in a real interview:

𝘦𝘊𝘢𝘳𝘊𝘰, 𝘢 𝘑𝘢𝘱𝘢𝘯𝘦𝘴𝘦 𝘭𝘦𝘢𝘥𝘪𝘯𝘨 𝘮𝘢𝘯𝘶𝘧𝘢𝘤𝘵𝘶𝘳𝘦𝘳 𝘰𝘧 𝘦𝘭𝘦𝘤𝘵𝘳𝘪𝘤 𝘱𝘢𝘴𝘴𝘦𝘯𝘨𝘦𝘳 𝘷𝘦𝘩𝘪𝘤𝘭𝘦𝘴, 𝘩𝘢𝘴 𝘣𝘦𝘦𝘯 𝘴𝘵𝘳𝘶𝘨𝘨𝘭𝘪𝘯𝘨 𝘸𝘪𝘵𝘩 𝘢 𝘭𝘰𝘸 𝘮𝘢𝘳𝘬𝘦𝘵 𝘴𝘩𝘢𝘳𝘦 𝘪𝘯 𝘵𝘩𝘦 𝘉2𝘉 𝘴𝘦𝘨𝘮𝘦𝘯𝘵. 𝘛𝘩𝘦𝘺 𝘦𝘯𝘫𝘰𝘺 𝘴𝘵𝘳𝘰𝘯𝘨 𝘱𝘰𝘴𝘪𝘵𝘪𝘰𝘯𝘴 𝘪𝘯 𝘵𝘩𝘦 𝘉2𝘊 𝘴𝘱𝘢𝘤𝘦, 𝘣𝘰𝘵𝘩 𝘥𝘰𝘮𝘦𝘴𝘵𝘪𝘤𝘢𝘭𝘭𝘺 𝘢𝘯𝘥 𝘪𝘯 𝘵𝘩𝘦 𝘪𝘯𝘵𝘦𝘳𝘯𝘢𝘵𝘪𝘰𝘯𝘢𝘭 𝘮𝘢𝘳𝘬𝘦𝘵. 𝘏𝘰𝘸𝘦𝘷𝘦𝘳, 𝘦𝘊𝘢𝘳𝘊𝘰’𝘴 𝘴𝘢𝘭𝘦𝘴 𝘵𝘰 𝘴𝘮𝘢𝘭𝘭 𝘢𝘯𝘥 𝘮𝘦𝘥𝘪𝘶𝘮 𝘴𝘪𝘻𝘦 𝘣𝘶𝘴𝘪𝘯𝘦𝘴𝘴𝘦𝘴 𝘤𝘰𝘯𝘵𝘪𝘯𝘶𝘦 𝘴𝘵𝘢𝘺𝘪𝘯𝘨 𝘧𝘢𝘳 𝘣𝘦𝘭𝘰𝘸 𝘦𝘹𝘱𝘦𝘤𝘵𝘢𝘵𝘪𝘰𝘯𝘴. 𝘛𝘩𝘦 𝘊𝘌𝘖 𝘩𝘢𝘴 𝘪𝘯𝘷𝘪𝘵𝘦𝘥 𝘺𝘰𝘶 𝘵𝘰 𝘩𝘦𝘭𝘱 𝘵𝘩𝘦𝘮 𝘰𝘶𝘵.

How would you approach this business problem?

When ready, check this video below where I present how to approach this problem.

BCG: Tips And Case Interview Examples

The Boston Consulting Group website  states something very important: the goal of the hiring process is to get to know you better, which means, in the context of Consulting interviews, understanding how you solve problems .

Remember this: in case interviews,  to show how you think is MUCH MORE IMPORTANT than to find an answer to the case .

As a result, you will have case study questions to showcase your problem-solving skills. Likewise, fit interviews have the same purpose: to show what problems you faced and how you resolved them.

• BCG interview prep tips
• BCG’s interactive case tool
• BCG case interview example: climate change challenge
• BCG case interview example: GenCo
• BCG case interview example: FoodCo

Check out the BCG Hub : A library of 20+ free resources that cover everything you need to secure a job offer at BCG.

Bain: Tips And Case Interview Examples

Bain & Company’s website highlights something very important: successful applicants manage to turn a case interview into a conversation between two consultants .

In other words, you don’t want to appear as a candidate but as a consultant !

To do this, you need to master the main problem-solving techniques that consulting firms want to see.

• Bain interview prep tips here and here
• Bain case interview examples: coffee , fashioco
• Bain case interview sample videos: a first video , a second video

Check out the Bain Hub : A library of 20+ free resources that cover everything you need to secure a job offer at Bain & Company.

Deloitte: Tips And Case Interview Examples

As for the BCG’s section above, the Deloitte website clearly states that in case interviews , it is much more important to show how you think and interact with your interviewer than to find the right answer to the case.

• Deloitte interview prep tips
• Deloitte case interview examples: here (more than 15 case interview examples)
• Deloitte case interview example: Federal Agency
• Deloitte case interview example: Recreation Unlimited
• Deloitte case interview example: Federal benefits Provider
• Deloitte case interview example: Federal Civil Cargo protection Bureau

Get 4 Complete Case Interview Courses For Free

You need 4 skills to be successful in all case interviews: Case Structuring, Case Leadership, Case Analytics, and Communication. Join this free training and learn how to ace ANY case questions.

Oliver Wyman: Tips And Case Interview Examples

Like the Deloitte website, Oliver Wyman’s website points out that, above all,  you must demonstrate your ability to think in a structured, analytical, and creative way.

In other words, there are no right or wrong answers, but only showing how you solve problems matters.

• Oliver Wyman interview prep tips
• Oliver Wyman case interview examples: here (Aqualine) and here (Wumbleworld)

Kearney: Tips And Case Interview Examples

Now it’s time to tell you something you could have heard a hundred times.

Yet too many candidates do it.

Do NOT force your solution to adapt to a standard framework . As a result, this will only take you to a place you don’t want to go: the pool of rejected candidates .

To learn more about this, check the “What Not To Do” section on the AT Kearney website .

• Kearney interview prep tips
• Kearney case interview examples: here and here
• Kearney case book: here

Strategy&: Interview Prep Tips

Strategy& doesn’t provide case study examples on its website, but it shares insights on career progression, which I recommend reading when you prepare for your fit interviews.

• Strategy& interview prep tips

Roland Berger: Tips And Case Interview Examples

I like the examples of case studies presented on the Roland Berger website .

Because the two examples of case studies are very detailed and illustrate the kind of solutions your interviewers expect during case discussions.

• Roland Berger interview prep tips
• A first Roland Berger case interview example: part 1 and part 2
• A second Roland Berger case interview example: part 1 and part 2

Alix Partners: Interview Prep Tips

Like Strategy&, Alix Partners doesn’t provide case study examples on its website.

However, they give an overview of what they are looking for: they want entrepreneurial, self-starter, and analytical candidates, which are skills that all consulting firms highly appreciate .

• Alix Partners interview prep tips

OC&C: Interview Prep Tips

Here are two case study examples from OC&C:

• Imported spirit
• Leisure clubs

253 Case Studies From Business School Case Books

Most of these 253 case study examples are based on case interviews used by consulting firms in real job interviews .

As a result, you can have a good idea of the case study questions you can have when interviewing at these firms .

The Full List Of 253 Free Case Study Examples

• Chicago business school
• Australian Graduate School of Management
• Columbia business school
• Harvard business school
• Wharton business school (2009)
• Wharton busines school (2017)
• Darden business school

Do you want to practice a specific type of case study? Now you can…

I have sorted this list of 253 case studies by type:  profitability, market expansion, industry analysis, pricing, investment or acquisition,  and guesstimates (also known as market sizing questions).

Bonus #1: Know The Types Of Cases You Are Likely To have During Your Interviews

• Profitability cases (29% of cases from that list)
• Investment cases (19% of cases from that list)
• Market sizing questions (15% of cases from that list)

As a result, assuming you’ll have 6 interviews (and therefore 6 case interviews) during the recruitment process:

• “Profitability cases are 29%”  means that chances to have 2 profitability case studies during your recruitment process are very high
• “Investment cases are 19%”  means that chances to have 1 investment case study during your recruitment process are very high.
• “ Guesstimates are 15%”  means that chances of having  1 market sizing question during your recruitment process are high.

Bonus #2: The 10 Cases I Recommend You Doing Now

Over 250 examples of case interviews are a great list, and you may not know where to start.

So, I’ve compiled a list of my 10 favorite case studies.

The 5 case studies I recommend doing if you are a BEGINNER

1. stern case book: drinks gone flat (starting at page 24).

This is a good introduction to a common type of case (declining sales here). I liked the solution presented for this case, particularly how it started by isolating declining sales (what range of products? Volumes or prices, or both?).

2. Stern case book: Sport bar (starting at page 46)

This is an investment case (should you invest in a new bar). Even if the solution presented in this case book is not MECE , it covers the most common quantitative questions you might have in such a case. I recommend doing this case.

3. Stern case book: MJ Wineries (starting at page 85)

This is a profitability case. I liked the solution presented in this case because it illustrates how specific good candidates should be. The case concerns wine, so a good candidate should mention the quality of lands and grapes as important factors.

4. AGSM case book: Piano tuners (starting at page 57)

This is a typical market sizing question. How to answer this type of question is a must-know before going to your interviews.

5. Darden case book: National Logistics (starting at page 49)

Again, this is a very common case (how to reduce costs). I liked the broad range of questions asked in this case, covering key skills assessed by consulting firms during case interviews: brainstorming skills (or creativity), quantitative skills, and business sense.

The 5 case studies I recommend if you are more ADVANCED in your preparation

1. stern: the pricing games (starting at page 55).

This case study asks you to help your client assess different business models. I liked this case because the range of issues to tackle is quite broad.

2. Wharton 2017: Engineer attrition at SLS Oil & Gas Services (starting at page 55)

I liked this case study because the case prompt is uncommon: your client has been facing a very high attrition rate among its population of Engineers. As a result, it’s very unlikely that your solution fits a well-known framework, and you’ll have to demonstrate your problem-solving skills by developing a specific solution.

3. Wharton 2017: Pharma Company Goes International, Outsources Benefits, Integrates New Technology (starting at page 95)

This case is about a client considering outsourcing a part of their activity. Even though I don’t know if this type of case study is very common, I had many case studies like this when I passed my interviews a few years ago. And I always found them difficult!

4. Insead: Gas retail case (starting at page 73)

The question in the problem statement is very broad, making this case difficult. So, only good candidates can have a structured case discussion here.

5. Darden: Fire Proof (starting at page 84)

This is a market entry case. Try to solve it by developing a structure as MECE as possible.

CareerInConsulting.com's Free Resources

Access my exclusive free training to help you prepare for your case interviews .

Besides, you can learn my step-by-step guide to answering market sizing questions .

You’ll get my formula to solve all market sizing questions.

Moreover, if you are a beginner, you can read my article on how to solve business cases (+ a 4-week prep plan to get case interview ready).

Also, check these 11 must-know frameworks to ace your case interviews.

Finally, you can read the articles in the blog section of my website.

That’s quite a list.

To complete this list, check this free case interview course , where you’ll find case questions recently asked in actual interviews.

Now, I’d like to hear from you.

Which key insights were new to you?

Or maybe I have missed something.

Either way, let me know by leaving a comment below.

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You need 4 skills to be successful in all case interviews: Case Structuring, Case Leadership, Case Analytics, and Communication. Enroll in our 4 free courses and discover the proven systems +300 candidates used to learn these 4 skills and land offers in consulting.

50+ Case Interview Questions and Examples From Top Firms

Discover over 50 case interview questions and examples from top consulting firms. Prepare effectively for your next interview with expert insights and tips!

Posted August 22, 2024

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Table of Contents

Let’s face it, consulting interviews can be intimidating, especially with their complex case questions. These questions are designed to assess your problem-solving skills, analytical ability, and strategic thinking, crucial competencies for success in the consulting world. Recognizing the types of case interview questions and mastering them can significantly elevate your chances of landing your dream job in prestigious firms like McKinsey, BCG, or Bain.

This article serves as a comprehensive guide to mastering case interview questions, providing insights into the most common consulting case interview questions and detailed case interview examples from top consulting firms. From McKinsey case interview questions to unique challenges posed by firms like Deloitte and Accenture, we've got you covered. We will also share tips on how to ace your case interview and how to prepare for different types of case interview questions effectively.

By the end of this article, you'll have a well-rounded understanding of what to expect and how to showcase your problem-solving prowess when it matters most. Let’s begin!

List of Case Interview Questions, Practice Cases, and Examples

In preparing for your consulting interviews, it's crucial to familiarize yourself with the most common types of case interview questions. On this list, we will provide sample questions from the top consulting firms.

McKinsey Case Interview Examples

To excel in McKinsey case interviews , it's crucial to practice with specific examples that mirror the real challenges you might face. Here are some detailed scenarios from McKinsey to guide your preparation:

1. Beautify Case

Sample Question #1 : Beautify is excited to support its current staff of beauty consultants on the journey to becoming virtual social media-beauty advisors. Consultants would still lead the way in terms of direct consumer engagement and would be expected to maintain and grow a group of clients. They would sell products through their own pages on beautify.com, make appearances at major retail outlets, and be active on all social media platforms.

What possible factors should Beautify consider when shifting this group of employees toward a new set of responsibilities?

Sample Question #2 : One of the key areas that Beautify wants to understand is the reaction of current and potential new customers to the virtual social media-beauty advisors.

Imagine you are a current Beautify customer and you mostly shop at your local department store because you enjoy the high-touch service offered by in-store consultants. What features would make you consider switching to a mostly virtual sales experience?

See more questions here .

2. Diconsa Case

Sample Question #1 : What should the team investigate to determine whether the Diconsa network could and should be leveraged to provide a range of basic financial services to Mexico’s rural population?

Sample Question #2: The team has estimated that it currently costs a family 50 pesos per month in transportation and food to make the journey to collect benefit payments. The team also estimates that if benefits were available for collection at local Diconsa stores, the cost would be reduced by 30 percent.

Twenty percent of Mexico’s population is rural, and of that number, half currently receive state benefits.

You can assume that Mexico has a population of 100 million.

You can also assume that families in Mexico have an average four members, and that this does not vary by region.

If every family could collect state benefits at their local Diconsa stores, how much in total per year would be saved across all Mexican rural families receiving state benefits?

3. Electro-Light Case

Sample Question #1: What key factors should SuperSoda consider when deciding whether or not to launch Electro-Light?

Sample Question #2: SuperSoda executives believe that the company's position as a top-three beverage company gives it strategic impetus toward achieving the desired market share. However, they ask the team to outline what would be needed to achieve the target 12.5 percent share of the electrolyte-drinks market. What would SuperSoda need to do to gain the required market share for Electro-Light following its launch?

4. National Education System Transformation

Sample Question #1: What issues would you want to investigate in diagnosing the current state of the Loravian school system?

Sample Question #2: One of the clients at Loravian’s educational department mentions neighbor country “C” as an example, because it’s outperforming all of Loravia's economic peers and neighbors in the international assessment. She believes that the more concentrated school structure in this country is a big reason for better outcomes in the international assessment. She suggests that having larger, less fragmented schools allows for more effective teacher selection and training, leading to improved education outcomes for students. Finally, she shares that 15 percent of Loravia's population is currently attending school.

What would be the reduction in the total number of schools in Loravia if it were to achieve the same average school size as neighbor country C?

5. Talbot Trucks Case

Sample Question #1: What information would you want to collect to understand the attractiveness for Talbot Trucks in producing and selling eTrucks in Europe?

Sample Question #2: After running focus groups with Talbot Trucks’ customers, the team concluded that the total cost of an eTruck needs to be the same as a diesel truck to be considered attractive to customers. Currently, a Talbot Trucks diesel truck costs €100,000.

Assuming that the figures above do not change, what is the maximum price Talbot Trucks can charge for its eTruck so that the total cost of ownership is equal to that of a diesel truck?

6. Shops Corporation Case

Sample Question #1: What types of factors would you want to explore to understand how Shops Corporation might improve its diversity within senior leadership?

7. Conservation Forever Case

Sample Question #1: What factors could the team consider when choosing one of the three specific geographies on which to focus the conservation efforts?

Sample Question #2: The director of CF likes these initial projections, but is not convinced that the assumptions are realistic. They tell the team, “According to your model, there are three levers we need to focus on to generate revenue from ecotourism in Peru: number of visitors, length of stay, and spending amount. What are your best ideas for how to maximize each lever? And how about some ideas outside of the constraints of this model?”

Your team is meeting in ten minutes to generate ideas in preparation for a workshop with leaders from several coastal communities, and you are jotting down some notes.

What ideas do you have to generate revenue linked to ecotourism?

McKinsey offers case interview examples that cover various industries and problem-solving scenarios, helping you prepare for any interview question. Engaging with these cases will not only boost your confidence but also enhance your ability to approach complex business problems with innovative solutions.

BCG Case Interview Examples

At BCG , the case interview process is designed to simulate the real-world problems that client teams face, allowing you to demonstrate your problem-solving abilities and specialized skills relevant to the role. Embracing the challenge with enthusiasm will not only make the experience rewarding but also provide a true taste of consulting life at BCG. Here are some of their case interview examples:

Here are a few examples of common case questions:

• Should a company enter a new market?
• Should a company pursue a new product line?
• How can a company improve its profitability?
• How can a company reduce costs?
• How can a company improve its customer satisfaction?

Read: How to Prepare for Boston Consulting Group Management Consulting Case Interviews?

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Bain Case Interview Examples

During your preparation for Bain case interviews, it's essential to delve into specific examples that reflect the real challenges you may encounter. Here's are five examples of practice cases and mock interview tips provided by Bain to guide your preparation:

• Coffee Shop Co. Practice Case
• FashionCo. Practice Case
• Associate Consultant Mock Interview
• Consultant Mock Interview
• Written Case Interview Tips

Read : Bain Case Interviews: A Comprehensive Preparation Guide

Deloitte Case Interview Examples

Deloitte provides a rich array of materials and interactive case studies designed to prepare you for the rigors of their case interviews. These examples reflect real client engagements, offering insights into the complex problems you may face and the analytical, creative, and strategic thinking required to solve them.

Deloitte Case Examples

Footloose Case Study sample questions:

• How big is the work boot market (expressed in euros)? Does Duraflex get more of its revenue from work boots or casual boots?
• Explain why Badger is outperforming Duraflex in the work boot market.
• What changes would you recommend to Duraflex’s work boot strategy? Why? Would you recommend they introduce a sub- branded boot line?

Engagement Strategy: Federal Agency V sample questions:

• To begin an engagement strategy, how might you establish a baseline to measure employee engagement against?
• What characteristics would you look for in external organizations to use as potential benchmarks?
• What are the various populations of the workforce and how would you engage them?
• How will you use Deloitte’s relationship with, and institutional knowledge, of Agency V to develop your deliverables?

Recreation Unlimited sample questions :

• What are potential reasons for Recreation Unlimited's poor eCommerce performance relative to competitors?
• In order to win digital customers, Recreation Unlimited wants to find ways to improve and differentiate their digital customer experience. What are some potential ways to improve the customer experience and how does improving customer experience create value for the customer and value for the business?
• As part of the digital strategy that Recreation Unlimited is considering, they are debating whether to improve the website experience or increase digital marketing. Since they are not sure they will have the budget for both, they want you to help them decide. How would you approach this question?

Strategic Vision: Federal Benefits Provider sample questions :

• What steps should the Deloitte team take to develop a 10-year strategic roadmap for the Agency?
• What are the components or metrics of a business case that should be considered to justify the development of a 10-year strategic roadmap?
• In building the 10-year strategic road map, the Deloitte team realizes there are several key challenges that pose impediments to implementing the Agency’s vision. What is the cost of each challenge to the Agency?
• Leaders in the various departments remain skeptical that the 10-year vision can positively impact their unique operations, while employees are largely unaware of the 10-year vision initiative. How might Deloitte develop an impactful change management strategy to institutionalize the goals of the 10-year vision and ensure buy-in across the Agency’s diverse workforce?

Talent Management: Federal Civil Cargo Protection Bureau sample questions:

• What data would you want to have to be able to move forward?
• What immediate steps would you take to review screening processes and training procedures?
• How would you incorporate things like job descriptions and competencies in your review in order to build a new human capital strategy?
• How will you engage and develop leadership given the Chief Administrator is new to the role and has a different background?

Click here to practice a consulting case interview.

Read : Best 30 Free Resources to Get into Management Consulting

Accenture Case Interview Examples

Accenture's case interviews serve as the final hurdle to becoming a consultant at the firm. These interviews are uniquely structured to assess a candidate's ability to solve complex business problems. The format includes both interviewer-led and candidate-led cases, providing a comprehensive evaluation of your problem-solving capabilities.

Learn more about Accenture’s Case Interview Workbook here .

OC&C Case Interview Examples

OC&C , a globally recognized but relatively smaller strategy consulting firm, is known for its rigorous case interviews that reflect real-life client challenges. These interviews are designed to assess a wide range of skills, from analytical thinking to business acumen, tailored to the firm's focus on private equity clients and seven key industries.

1. Leisure Clubs Case sample questions:

• What factors might you analyze to determine what is going to happen to demand for leisure clubs?
• What is likely to happen to demand for leisure clubs?
• What is the critical issue for our client?

2. Important Whisky in an Emerging Market Case sample questions:

• What information would you require to help explain the slowing down of growth?
• What is driving profitability down?
• What are the potential strategic options?

Oliver Wyman Case Interview Examples

Oliver Wyman's case interviews are designed to uncover how you approach unstructured challenges and evaluate data to build comprehensive solutions. The firm encourages candidates to think critically and creatively, using logical components to break down complex problems.

See how Oliver Wyman can help you with interview preparation by explaining conversational and case interviews, as well as sharing interview tips and explaining what the role of the case interview is.

A.T. Kearney Case Interview Examples

A.T. Kearney's interview process is notably rigorous, tailored to assess a wide range of abilities from analytical thinking to strategic problem-solving. Take a look at A.T. Kearney’s case example and case book to help you how to prepare effectively:

• Promotional Planning Case example
• Consulting Case Book and Tips for Interviewing

Strategy& / PWC Case Interview Examples

Strategy& / PWC focuses on executive-level strategic issues, such as capability identification, market positioning, and operational efficiency. This branch's case interviews are designed to simulate real business challenges, helping to prepare candidates for the demands of strategic consulting roles. Here's a closer look at the types of questions you might encounter:

Sample Question 1: Market sizing

• Estimate the size (by value) of the UK grocery retail market

Sample Question 2: Market sizing

• Estimate the size (by value) of the UK retail cooking sauces market

Sample Question 3: Interpreting information and drawing conclusions

• Look at the chart on the following slide
• Interpret the meaning of the chart
• How are things changing? Who's winning and who's losing?
• Given your knowledge of the UK grocery market, why might this be?

Learn more about case interview preparation by reading through Strategy& / PWC’s presentation .

L.E.K. Consulting Case Interview Examples

The case interview process at L.E.K. Consulting is rigorous – designed to evaluate a candidate's ability to solve complex business problems. The interviews are structured across multiple rounds, each focusing on different aspects of your analytical and strategic thinking abilities. Here's what you need to know to prepare effectively:

• Interview Preparation
• Market Sizing Case Example Video Walkthrough

Roland Berger Case Interview Examples

The case interviews at Roland Berger are designed to evaluate your ability to display key personality traits, with a notable preference for candidates who have international experience, as this is explicitly stated by the firm. Roland Berger has provided two case webinars on their website. Each example provides a case scenario, problem, and tips on how to answer the questions.

• 3D Printed Hip Implants Case / 3D Printed Hip Implants Case 2 sample questions:
• Based upon the explanation process: Which are the most important costs to consider?
• Is additive manufacturing of the hip implant – based upon the given information – lucrative?
• Which measures could increase the economic feasibility of the product?
• Transit Oriented Development Case / Transit Oriented Development Case 2 sample questions:
• How would you split the 416 stations between little, medium, and large revenue potential?
• How can the public transport operator of Munich increase its revenue through focusing on its existing rail stations?

Capital One Case Interview Examples

The structure of a Capital One case interview typically involves three key sections: outlining the business situation and framework, tackling quantitative questions, and formulating a recommendation based on your calculations. Expect scenarios that might not strictly adhere to the MECE principle (Mutually Exclusive, Collectively Exhaustive), which is often a staple in consulting case interviews. This approach reflects the real-world ambiguity you might face in business situations, requiring a flexible and adaptive problem-solving strategy. Here's a video walkthrough on everything there is need to know about Capital One case interview:

• Strategy Analyst - Case Study Guide

EY Parthenon Case Interview Examples

EY-Parthenon case interviews are designed to mimic real-life challenges, providing a glimpse into the practical work of a consultant. The interviews are candidate-led, similar to styles seen at BCG or Bain, and focus on several key areas including analytical thinking, structured problem-solving, and effective communication. The EY-Parthenon behavioral interview questions are comparable to those you would encounter in interviews for other top-tier management consulting firms. Be prepared to answer the following questions:

EY-Parthenon Case Interview Behavioral/FIT Questions

• Tell me about yourself.
• Why are you interested in consulting, and why specifically EY-Parthenon?
• Describe a time when you worked on a team project. What was your role, and how did you contribute to the team’s success?
• Can you provide an example of a challenging problem you faced at work and how you solved it?
• How do you handle tight deadlines and pressure? Can you give an example?
• Tell me about a time when you had to influence someone to achieve a goal.
• How do you prioritize tasks when you have multiple projects to manage?
• Describe a situation where you had to deal with a difficult team member. How did you handle it?
• What is your greatest professional achievement so far?
• Give an example of a time when you had to learn something new quickly.
• Why do you think you would be a good fit for EY-Parthenon’s culture?
• Tell me about a time you failed or made a mistake. How did you handle it?
• Can you provide an example of a project where you demonstrated leadership?
• How do you handle feedback and criticism?
• Are there any questions that you have for me?
• Your answer for this question must be a resounding “YES”. The more you have questions for them, the better because that shows that you’ve researched the company. You may ask about a particular previous project they did or something in particular to their operations.

Online Case Interview Examples from Consulting Clubs

Mastering the case interview is essential in consulting, and consulting clubs are key in this preparation. NYU, Duke, and Kellogg Consulting Club, for instance, provide free various interview cases, both individual and group, that mimic real consulting challenges.

• NYU Stern MCA 2020-2021 Casebook
• Columbia Business School 2021 Casebook
• The Duke MBA Consulting Club Casebook 2021-2022
• UCLA Case Book 2019 – 2020
• Darden School Of Business 2021-2022 Casebook
• Kellogg Consulting Club 2020 Casebook
• Cornell MBA Johnson Consulting Club Casebook 2020-2021
• Notre Dame Casebook 2022
• FMS Consulting Casebook 2021-22
• INSEAD Consulting Club Casebook 2021
• IIMC Consulting Casebook 2021-22
• IIM Lucknow Casebook 2022
• Harvard Business School Management Consulting Club Case Interview Examples
• Berkeley Haas School of Business Consulting Club Interview Preparation Guide and Case Interview Examples 2019

How to Ace Your Case Interview

To excel in your case interview, it's crucial to demonstrate a blend of problem-solving skills, analytical ability, strategic and logical thinking, and comfort with ambiguity. These elements are essential as they reflect real client projects that you might handle at firms like Deloitte Consulting LLP.

Read : The 15 Most Common Consulting Interview Questions — With Answers

Step-by-Step Approach to Case Interviews

• Understand the Issue : Start by clarifying the case question. Ensure you fully grasp the problem before proceeding.
• Develop a Framework : Articulate a framework and initial hypothesis to explore. This helps in structuring your response and guides your analysis.
• Analytical Execution : Engage in logical storytelling. Walk the interviewer through your thought process and explain your assumptions. Take notes and structure your analysis clearly.
• Recommendation and Next Steps : Conclude with a strong recommendation based on your findings. Outline the next steps and expected results or impacts.

Read : Mastering Consulting Cases: A Step-by-Step Approach

Tips on How to Prepare For Your Case Interview

To excel in your case interview preparation, it's essential to engage in extensive practice with a variety of case types. Successful candidates often practice with dozens of case interview scenarios, treating the preparation process with the same rigor as studying for finals or the GMAT. Here are key steps to enhance your preparation:

• Diverse Practice Cases : Ensure the practice cases you use cover a broad spectrum of problems, including profitability, market sizing, and business expansion scenarios. This variety prepares you for any curveballs and helps develop flexibility in applying different frameworks.
• Quality of Practice Materials : Select high-quality practice cases from trusted sources. The content and structure of these cases should closely mimic the types of cases presented in actual interviews at top consulting firms.
• Framework Mastery : Rather than memorizing frameworks, focus on understanding and adapting them to fit different case scenarios. This approach helps in crafting tailored solutions during your actual interview.
• Time Management : Practice managing your time effectively during mock interviews. Top consulting firms like Bain appreciate candidates who can efficiently organize and analyze information under time constraints.
• Engage with Realistic Simulations : Participate in mock interviews and case sessions that simulate the actual interview environment. This practice helps you refine your problem-solving approach and improve your communication skills under pressure.
• Continuous Learning and Adaptation : Stay informed about new trends and changes in the consulting interview landscape. Engage with resources that provide updates and insights into evolving interview formats.

Personalized Coaching : Consider working with an experienced coach who can provide personalized feedback and guidance. Coaching can significantly enhance your performance by focusing on areas that need improvement.

Practice with Experts from Leland

Through an extensive exploration of the various aspects of case interviews across prestigious consulting firms like McKinsey, BCG, Bain, Deloitte, Accenture, and others, it's evident that thorough preparation and an adaptable mindset are critical for success.

Leland offers comprehensive case study interview preparation tailored to help you excel in consulting case interviews. Our experienced consultants provide personalized coaching, realistic case simulations, and strategic feedback to enhance your problem-solving skills and boost your confidence. With our expert guidance, you'll be well-prepared to tackle any case interview challenge and make a lasting impression.

What questions should you consider asking during a case study interview?

• In your case study interview, it's crucial to ask insightful questions to understand the context fully. Consider asking about how the interviewee discovered your company, the timeline of their engagement, their initial experiences with your company, the challenges they aimed to address, and whether they considered any competitors or alternative solutions.

What strategies can enhance your performance in a case interview?

• To excel in a case interview, start by taking a moment to organize your thoughts before responding. Structure your response logically, guiding the interviewer through your thought process and clarifying any assumptions you make. Maintain composure and treat the interview as a professional conversation, which can help alleviate pressure.

How can you excel in a case study interview?

• To perform well in a case study interview, make sure to take detailed notes throughout. Even if you are not familiar with the industry, focus on demonstrating your analytical skills and how you approach problem-solving. Communicate clearly and ensure you have a thorough understanding of the problem you're asked to analyze.

What types of questions are typically asked in case interviews?

• Case interviews generally include questions from nine key categories, such as framework or issue tree questions, market-sizing and guesstimate questions, valuation inquiries, brain teasers, chart interpretation, value proposition analysis, informational queries, and mathematical problems.

Preparing for consulting recruiting and/or case interviews? Here are some additional resources to help:

• Top 3 Tactics to Ace Your Case Interview
• A Comprehensive Guide to McKinsey & Co., Bain & Co., and Boston Consulting Group
• From No Offers to Multiple Offers - How to Take Your Casing to the Next Level
• Soft Skills for Consulting: Why They Matter and How to Develop Them
• Five Tips to Break Into Management Consulting

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Crafting Cases

Case Interview Examples: The 9 Best in 2024 (McKinsey, Bain, BCG, etc.)

February 7, 2024 By Julio Tarraf

Today I’m gonna show you a curated list of the 9 VERY BEST Case Interview Example videos from all around the web.

So you don’t have to go through the same pains I did back when I was preparing:

• I watched TONS of videos on YouTube, but most of my time was WASTED because many weren’t helpful at all.
• I couldn’t tell which cases were realistic and which were unrealistic, or which were hard and which were easy.
• I couldn’t even tell whether each answer by the candidates was good enough to pass the interview or not (my best proxy was their confidence, which I later found was NOT a good proxy).

So that brings us to this article.

What's in for you:

Every hour you spend on the examples in this article is the equivalent of spending 3-5 hours browsing YouTube on your own, reading Case in Point, or going through piles of casebooks.

This article is the result of...

24 of those videos didn’t make it to the list: they were  a mix of poorly recorded, unrealistic and even   misleading .

I curated just the best so you wouldn’t have to waste your own 20+ hours to find them.

Table of contents:

• #1. Playworks market entry  [Best for beginners]
• #2. Agricultural chemicals product launch [Advanced candidates only]
• #3. A+ Airlines’ reaction to competitor’s change
• #4. Auto manufacturer profitability decrease  [Best profitability case]

#5. Swift fox population decrease

• #6. Bed and Bath e-commerce acquisition  [Best for solo practice]

#7. FlashFash acquires LaMode

#8. medical supplies manufacturer demand decrease.

• #9. Pepsi’s LA bottling plant
• #10. 1930’s gangster growth strategy

#1. Playworks market entry

• Easy case, with one Estimation, one Quantitative Analysis, and one Chart Interpretation questions within. Overall, good to practice and to get a feel for case interview dynamics
• You can’t see the Exhibit the candidate is shown, but you can find it in this link provided by Yale SOM Consulting Club  (go to page 9)

CANDIDATE’S PERFORMANCE

• Stellar framework, touching on all relevant issues and showing a plan to solve the problem from beginning to end
• Great job performing a spontaneous reality check to his estimation
• I would expect more reasoning behind some of the key assumptions (# of high schools and colleges in the US). He was, however, close to the real values – his background as a teacher could have played a role, but as an interviewer I would still have needed to see his reasoning behind those numbers
• Big mistake inadvertently converting square yards to square feet (~10x difference in final answer) combined with math confusion within the Estimation and inefficiencies in Analysis: his analytical skills would have to be tested more thoroughly in a third interview or in a next round

The next case is mostly useful for its framework question.

It’s a high-quality, nuanced case question, similar to the ones you’ll get in McKinsey, Bain and BCG interviews.

The problem with this case is…

It requires either a well-structured answer or a ton of business sense, and the candidate solving it had neither.

As a result, he missed so many great insights, which made the video poor where it could have been rich for those who are practicing: business insight.

To spice up your practice, I’ll list those insights after the video under a spoiler alert, so you can add them to your own business sense library.

Given all of this, I would recommend this video for advanced candidates only .

(To understand what elements a perfect answer would need and how to create one for any case, check out our free course, Case Interview Fundamentals.)

#2. Agricultural chemicals product launch

Product launch

Candidate-led

• Tough case. Full of nuance, and suitable for an MBB first-round (perhaps even for a final-round).
• The analysis at  26:15  is a tough one, great practice for advanced students looking to improve their quantitative skills. Don’t forget that  you need to provide an insight after getting to the numerical answer.
• Right from the start, you can see that you’d need to (1) size the financial benefits orchards would get from using your product and (2) run viability and pricing analyses. The candidate fails to see this until the interviewer suggests it.
• The candidate missed several other important insights which would have been impressive. Can you spot any? Read them below, under the spoiler alert.

As I said, I’ll quickly go over the insights this candidate missed, as I think they could greatly add to your business sense library.

1) The one and most important is the pricing and viability analysis.

• One of the first questions that need to be answered when solving this case is, “what’s the size of the financial benefits of this product to the buyer, how much can we capture of it, and does it covers the manufacturing and distribution costs?”.
• The reason is simple: this analysis can be run entirely on data we most likely have (from research while developing the product), and it will quickly tell us if the product isn’t viable or if we need a strategy pivot.
• When guided, the candidate eventually runs this analysis, but the fact that this isn’t even explicit in his initial structure is still a red flag.
• Here’s what I would expect from a top-2% candidate. This analysis should have been outlined in the initial structure, along with a quick brainstorming of how this product might bring increased profits for the buyer.

2) There are several other potential sources of increased ROI that the launch of this product could yield that he didn’t even consider:

• Cross-selling opportunities to these same clients, once we’re selling Mango Maker to them.
• The possibility of selling this product in several other countries (thus potentially decreasing the costs of production with scale gains.)
• The possibility of selling this product to producers of other tropical fruits (to his credit, he did mention this when pressed, by the end of the video).
• The possibility of acting towards increasing the patent duration.
• The possibility of having some cash flow from the product after the patent expires.

The key to getting to those insights would have been to build a more robust initial framework. More business sense would help for sure, but  structuring techniques  are more feasible to practice and develop.

Lastly: the interviewer says, by the end of the video, that the interviewer would pass his first-round MBB interview with this performance. I do not agree with her.

While it is possible that his interviewers would pass him and let partners decide whether or not he’s suitable for the firm, the risk is just too high.

Some interviewers might pass him, but many others definitely would not.

Before we move on…

Did you know there are ONLY 6 types of questions an interviewer will ask you in a case?

Join our FREE 7-day case interview course to…

• Learn what these six types of questions are…
• Get step-by-step approaches to answering them…
• And get several in-depth examples taylored for solo practice.

Now to the next video…

Yale SOM Consulting Club and Elaine Dang deserve congratulations on the two videos they made.

It’s super high quality work. 

Both of their video examples are similar to real case interviews in format and content, and they’re even superior to some made by case interview prep websites.

#3. A+ Airlines' reaction to competitor's change

• Questions and difficulty realistic for McKinsey, Bain, or BCG
• A real case might have more Brainstorming questions within the case
• Negative: you can’t se the exhibits the candidate is shown
• Great: all of her answers were backed by at least one layer of structure
• Insights provided after calculating every new number, which is super important  (learn more)
• She did a good job keeping the interviewer on board by doing her math out loud at all times
• One thing she could’ve done better was to not constantly come back to the “cash tied up in the cash box” idea – she should’ve tested it once and definitively as to whether that is relevant or not (it isn’t) – a partner would have certainly challenged her on that

Featuring next: me reviewing my own video from a neutral point of view.

Yes, I know that can’t possibly be unbiased.

But here’s why I think this video will get you ahead of other candidates and why you should ABSOLUTELY NOT miss out on this :

• The case comes nearly straight from my own Bain final round.
• My question in the end is difficult (even for McKinsey, Bain or BCG’s standards), and Bruno’s answer is impressive.
• Bruno’s solution is not perfect, and this gives us both an opportunity to openly discuss how it could’ve been better by the end.

#4. Auto manufacturer profitability decrease

• Average-difficulty profitability case in the first half, and a difficult question at 15:44
• Full realistic drill-down to find the real root cause of the problem, which is a common thing in case interviews that you’ll only find in this video
• Bruno should have presented his answer as a plan before diving into the profit tree , which is an advanced skill that makes you sound more like a consultant and less like a candidate
• Efficient and organized drill-down in the profit tree, a must-master habit for all candidates
• Super insightful answer to the second question because it shows second-order level thinking

If you’re mainly looking to improve your performance in profitability cases, there are two pieces of content worth checking out:

• This video: 5 Tactics To Stand Out In Your Profitability Case Interviews
• And this article, the state-of-the-art in profitability trees: Profitability Trees: The Complete Guide

What I love about the next case is that the first question is on diagnosing a client’s issue, but it’s not a profitability case.

It’s actually a public sector case!

Most beginners think you only use issue trees and drill-down analysis when solving a profit problem, but as you’ll see in this case, this is not true at all.

The candidate’s answer is good, so you can compare your own answer to his.

• This is a difficult, realistic diagnostics case, great for advanced candidates to step up their practice with hard cases
• You are not shown a critical exhibit the candidate gets in the middle of the case, making it unsuitable for practice from then on
• The candidate’s initial structure is insightful because it breaks down the population problem into its key drivers
• The insights the candidate provided on the exhibits are spot-on, but I would expect next-steps after the conclusions (e.g. after 10:33 , he could have said  “And to figure out whether this really is the cause of the population decrease, the next thing I would do is…” )
• But he doesn’t make the same mistake twice – at 23:20 , he gets to a number the interviewer asked and, this time, he leads the case perfectly: he comes up with a conclusion (the insight), and then proactively leads the case with next steps

The next video is THE SINGLE BEST in this list for solo practice.

You will see Bruno’s reaction to challenges most people only face in their actual interviews. Mock interviews hardly prepare you for this at all:

• How should you react when an interviewer asks you for more ideas after you’ve given everything you have?
• What do you do when your interviewer asks for a recommendation having given you nearly no data?

Go ahead and see for yourself.

(And how would a real candidate do in this case? I interviewed a candidate with this very same case and recorded it so you could see for yourself. )

#6. Bed and Bath e-commerce acquisition

• Pay special attention to how I made spontaneous challenges to Bruno after his answers. Most mock interviews, even with consultants, don’t have that. So candidates end up getting surprised by them in their actual interviews. You might even want to show this to your peers so they’ll do more realistic mock interviews with you
• In 9:00 I challenge Bruno to see if he’s sure whether customer loyalty was good (higher customer lifetime value) or bad (harder to increase market share) for the acquisition
• In 16:22 I challenge Bruno to find even more ideas other than the ones he had already given
• Due to being interviewer-led AND having great benchmark answers, this is the best video in this list for solo practice
• Super structured brainstorming, which showed me he would not leave any important area behind and helped him give me a ton of creative, insightful ideas
• Insightful framework answer (e.g., 99% of candidates would not talk about whether running this business would be attractive to the friend, much less in depth like he did)

The next case is one of the unmissable videos in this list for two main reasons.

Number one, the candidate’s answers are great, good enough to be benchmarks to your own.

Number two, it’s a difficult M&A case (which is not as exciting as watching the last Avengers movie, I get, but still…).

• Realistic, challenging interviewer-led case for McKinsey, Bain and even BCG (as some interviewers there have been doing this type of case recently)
• Quality answers make it great for solo practice
• Insightful, well-built framework, definitely a benchmark
• Notice how the candidate shows his structure for the quantitative analysis before diving into the math – that’s a great habit you definitely want to copy

I chose this next video mostly due to the quality of the initial case question. Here’s why.

Most profitability cases in casebooks are simple: “industry Y, profits fell. Why?”

But the truth is, in real MBB interviews, the case question almost always has more nuance than that.

That’s what this next video’s initial case question shows.

Just a quick heads up: I would not pass this candidate, as I wasn’t a fan of his initial structure nor of his business sense in general. Your initial structure should be more robust than his.

Profitability

Below average

• The nuances of the case question make it a realistic one for MBB first-round interviews.
• This case could be way more interesting and insightful if the candidate had followed a different path, like finding different sources of revenue, different segments they could cater to at a higher price point, or new markets they could enter with the resources they have.
• Your answers to the initial case question and to all the other brainstormings in the case could (and should, if you’re aiming for the moon) be 5X more robust than this candidate’s. Don’t base your answers off his.  (Learn how to create robust brainstorming structures here.)  
• The analysis he performs is good, structure and communication-wise.
• Great insight that buyers’ price sensitivity would be driven by the switching costs if there were any ( 19:30 ) 

The next video shows an operations case example.

It’s a wonderful use of process structures to diagnose an issue on production line.

I don’t really like its style for practicing for two main reasons.

First, it just doesn’t have the right tempo for you to pause and practice and then compare answers. 

Second, the comments in the middle break the flow.

Nothing wrong with those comments. They’re actually helpful.

The problem is they make this video good for learning a few new concepts, watching a good structure put to use, but not really to practice by yourself.

If you’re an advanced candidate and your practice is up to date and you’re  just looking to learn something new, jump right in.

#9. Pepsi's LA bottling plant

• Only one person playing the interviewer’s and the candidate’s roles, which doesn’t give you an idea of how the case would flow
• Difficult case, great case for advanced candidates to increase their experience/library
• Not really tailored for you to pause and solve at each moment, doesn’t have a good tempo for that
• “Candidate’s” structure at 5:34 is a great example of a process structure put to use in diagnostics cases
• Super insightful brainstorming at 14:50 , with at least one idea you most likely wouldn’t think of

Want to learn to solve cases like the best interviewees in these videos?

Here’s the deal: you can watch as many of these great videos as you want, but they will only help you up to a point.

They’ll help you understand what a case interview is like…

And if you try to answer the questions as you watch them, these videos will even help you get some practice…

But examples of case interviews will never teach you HOW to do cases well.

And if you want to be outstanding at solving cases so that firms like McKinsey, Bain, or BCG are begging you to accept their offers, we have something for you!

We’ve created a free course that will teach you EXACTLY HOW to answer the 6 (and only six!) types of questions you will find in ANY case interview.

(You can even go back to ALL the questions asked within the 9 examples of this article… You’ll see that each of them can be answered using one of the six techniques.)

Just click the button below to get exclusive access:

Join the FREE course now!

Now, you might be asking yourself: is this even worth my time?

I get that! There’s so much content out there, and so little time to practice.

Well, here’s the kind of e-mail we get from candidates all the time… It speaks for itself:

Bonus video!

In the beginning of this article, I told you there’d be a video by the end that didn’t make it to the list.

It’s  not that good to make it to a “best of” list. 

Still, I want to add it as a bonus, as it will add value to you in its own way.

#10. 1930's gangster growth strategy

But first, a word of warning... .

This video has a comment that could be misleading. Do NOT watch it without reading the comments.

Sometimes the greatest lessons come from mistakes. This is one of those times.

There’s a comment in the video in which the interviewer suggests that a necessary step in every case is “getting to” a chart.

This gives candidates two false impressions:

False Impression #1) There is a chart in every case, and your goal as a candidate it to “get to it”.

False Impression #2) If your interviewer has given you all the charts they had, you’ve done a good job!

Your goal as a consultant is to find the relevant hypotheses to solve the problem in a structured way and to test them with data.

If you do that, you will have done a great job, and your interviewer may or may not have given you a chart along the way.

This is true for interviews and the consulting job alike!

• Interesting case, as it’s a growth strategy in an unusual “industry”
• It is one of the few cases available online that let you practice Chart Interpretation questions, a common type at McKinsey, Bain and BCG
• Unfortunately, it gives the impression that “getting to all the charts” is the overarching goal of solving a case
• In the first Chart Interpretation question, the candidate missed a critical insight: that they already have 100% market share in all markets.  While the interviewer downplays it , it was a big foul that would be hard to recover from in a real interview
• The candidate provided insight after reading each exhibit – good job. However, he’d never proactively give clear next steps, which is what a well-prepared candidate would do
• If you’re practicing by yourself, remember not to use this candidate’s answers as a quality benchmark

I hope this article was helpful to you 🙂

If it was, I think you’ll also enjoy our free course.  Check it out for yourself by clicking here .

• Case Interview: A comprehensive guide
• Pyramid Principle
• Hypothesis driven structure
• Fit Interview
• Consulting math
• The key to landing your consulting job
• What is a case interview?
• Types of case interview
• How to solve cases with the Problem-Driven Structure?
• What to remember in case interviews
• Case examples or building blocks?
• How do I prepare for case interviews
• Interview day tips
• How we can help

1. The key to landing your consulting job.

Case interviews - where you are asked to solve a business case study under scrutiny - are the core of the selection process right across McKinsey, Bain and BCG (the “MBB” firms). This interview format is also used pretty much universally across other high-end consultancies; including LEK, Kearney, Oliver Wyman and the consulting wings of the “Big Four”.

If you want to land a job at any of these firms, you will have to ace multiple case interviews.

It is increasingly likely that you will also have to solve online cases given by chatbots. You might need to pass these either before making it to interview or be asked to sit them alongside first round interviews.

Importantly, case studies aren’t something you can just wing . Firms explicitly expect you to have thoroughly prepared and many of your competitors on interview day will have been prepping for months.

Don’t worry though - MCC is here to help!

This article will take you through a full overview of everything you’ll need to know to do well, linking to more detailed articles and resources at each stage to let you really drill down into the details.

As well as traditional case interviews, we’ll also attend to the new formats in which cases are being delivered and otherwise make sure you’re up to speed with recent trends in this overall part of consulting recruitment.

Before we can figure out how to prepare for a case interview, though, we will first have to properly understand in detail what exactly you are up against. What format does a standard consulting case interview take? What is expected of you? How will you be assessed?

Let's dive right in and find out!

Professional help

Before going further, if this sounds like a lot to get your head around on your own, don't worry - help is available!

Our Case Academy course gives you everything you need to know to crack cases like a pro:

Case Academy Course

To put what you learn into practice (and secure some savings in the process) you can add mock interview coaching sessions with expereinced MBB consultants:

Coaching options

And, if you just want an experienced consultant to take charge of the whole selection process for you, you can check out our comprehensive mentoring programmes:

Explore mentoring

Now, back to the article!

2. What is a case interview?

Before we can hope to tackle a case interview, we have to understand what one is.

In short, a case interview simulates real consulting work by having you solve a business case study in conversation with your interviewer.

This case study will be a business problem where you have to advise a client - that is, an imaginary business or similar organisation in need of guidance.

You must help this client solve a problem and/or make a decision. This requires you to analyse the information you are given about that client organisation and figure out a final recommendation for what they should do next.

Business problems in general obviously vary in difficulty. Some are quite straightforward and can be addressed with fairly standard solutions. However, consulting firms exist precisely to solve the tough issues that businesses have failed to deal with internally - and so consultants will typically work on complex, idiosyncratic problems requiring novel solutions.

Some examples of case study questions might be:

• How much would you pay for a banking licence in Ghana?
• Estimate the potential value of the electric vehicle market in Germany
• How much gas storage capacity should a UK domestic energy supplier build?

Consulting firms need the brightest minds they can find to put to work on these important, difficult projects. You can expect the case studies you have to solve in interview, then, to echo the unique, complicated problems consultancies deal with every day. As we’ll explain here, this means that you need to be ready to think outside the box to figure out genuinely novel solutions.

2.1. Where are case interviews in the consulting selection process?

Not everyone who applies to a consulting firm will have a case interview - far from it!

In fact, case interviews are pretty expensive and inconvenient for firms to host, requiring them to take consultants off active projects and even fly them back to the office from location for in-person interviews (although this happens less frequently now). Ideally, firms want to cut costs and save time by narrowing down the candidate pool as much as possible before any live interviews.

As such, there are some hoops to jump through before you make it to interview rounds.

Firms will typically eliminate as much as 80% of the applicant pool before interviews start . For most firms, 50%+ of applicants might be cut based on resumes, before a similar cut is made on those remaining based on aptitude tests. McKinsey currently gives their Solve assessment to most applicants, but will use their resulting test scores alongside resumes to cut 70%+ of the candidate pool before interviews.

You'll need to be on top of your game to get as far as a case interview with a top firm. Getting through the resume screen and any aptitude tests is an achievement in itself! Also we need to note that the general timeline of an application can differ depending on a series of factors, including which position you apply, your background, and the office you are applying to. For example, an undergraduate applying for a Business Analyst position (the entry level job at McKinsey) will most likely be part of a recruitment cycle and as such have pretty fixed dates when they need to sit the pre-screening test, and have the first and second round interviews (see more on those below). Conversely, an experienced hire will most likely have a much greater choice of test and interview dates as well as more time at their disposal to prepare.

For readers not yet embroiled in the selection process themselves, let’s put case interviews in context and take a quick look at each stage in turn. Importantly, note that you might also be asked to solve case studies outside interviews as well…

2.1.1. Application screen

It’s sometimes easy to forget that such a large cut is made at the application stage. At larger firms, this will mean your resume and cover letter is looked at by some combination of AI tools, recruitment staff and junior consulting staff (often someone from your own university).

Only the best applications will be passed to later stages, so make sure to check out our free resume and cover letter guides, and potentially get help with editing , to give yourself the best chance possible.

2.1.2. Aptitude tests and online cases

This part of the selection process has been changing quickly in recent years and is increasingly beginning to blur into the traditionally separate case interview rounds.

In the past, GMAT or PST style tests were the norm. Firms then used increasingly sophisticated and often gamified aptitude tests, like the Pymetrics test currently used by several firms, including BCG and Bain, and the original version of McKinsey’s Solve assessment (then branded as the Problem Solving Game).

Now, though, there is a move towards delivering relatively sophisticated case studies online. For example, McKinsey has replaced half the old Solve assessment with an online case. BCG’s Casey chatbot case now directly replaces a live first round case interview, and in the new era of AI chatbots, we expect these online cases to quickly become more realistic and increasingly start to relieve firms of some of the costs of live case interviews.

Our consultants collectively reckon that, over time, 50% of case interviews are likely to be replaced with these kinds of cases . We give some specific advice for online cases in section six. However, the important thing to note is that these are still just simulations of traditional case interviews - you still need to learn how to solve cases in precisely the same way, and your prep will largely remain the same.

2.1.3. Rounds of Interviews

Now, let’s not go overboard with talk of AI. Even in the long term, the client facing nature of consulting means that firms will have live case interviews for as long as they are hiring anyone. And in the immediate term, case interviews are still absolutely the core of consulting selection.

Before landing an offer at McKinsey, Bain, BCG or any similar firm, you won’t just have one case interview, but will have to complete four to six case interviews, usually divided into two rounds, with each interview lasting approximately 50-60 minutes .

Being invited to first round usually means two or three case interviews. As noted above, you might also be asked to complete an online case or similar alongside your first round interviews.

If you ace first round, you will be invited to second round to face the same again, but more gruelling. Only then - after up to six case interviews in total, can you hope to receive an offer.

2.2. Differences between first and second round interviews

Despite case interviews in the first and second round following the same format, second/final round interviews will be significantly more intense . The seniority of the interviewer, time pressure (with up to three interviews back-to-back), and the sheer value of the job at stake will likely make a second round consulting case interview one of the most challenging moments of your professional life.

There are three key differences between the two rounds:

• Time Pressure : Final round case interviews test your ability to perform under pressure, with as many as three interviews in a row and often only very small breaks between them.
• Focus : Since second round interviewers tend to be more senior (usually partners with 12+ years experience) and will be more interested in your personality and ability to handle challenges independently. Some partners will drill down into your experiences and achievements to the extreme. They want to understand how you react to challenges and your ability to identify and learn from past mistakes.
• Psychological Pressure: While case interviews in the first round are usually more focused on you simply cracking the case, second round interviewers often employ a "bad cop" strategy to test the way you react to challenges and uncertainty.

2.3. What skills do case interviews assess?

Reliably impressing your interviewers means knowing what they are looking for. This means understanding the skills you are being assessed against in some detail.

Overall, it’s important always to remember that, with case studies, there are no strict right or wrong answers. What really matters is how you think problems through, how confident you are with your conclusions and how quick you are with the back of the envelope arithmetic.

The objective of this kind of interview isn’t to get to one particular solution, but to assess your skillset. This is even true of modern online cases, where sophisticated AI algorithms score how you work as well as the solutions you generate.

If you visit McKinsey , Bain and BCG web pages on case interviews, you will find that the three firms look for very similar traits, and the same will be true of other top consultancies.

Broadly speaking, your interviewer will be evaluating you across five key areas:

2.1.1.One: Probing mind

Showing intellectual curiosity by asking relevant and insightful questions that demonstrate critical thinking and a proactive nature. For instance, if we are told that revenues for a leading supermarket chain have been declining over the last ten years, a successful candidate would ask:

“ We know revenues have declined. This could be due to price or volume. Do we know how they changed over the same period? ”

This is as opposed to a laundry list of questions like:

• Did customers change their preferences?
• Which segment has shown the decline in volume?
• Is there a price war in the industry?

2.1.2. Structure

Structure in this context means structuring a problem. This, in turn, means creating a framework - that is, a series of clear, sequential steps in order to get to a solution.

As with the case interview in general, the focus with case study structures isn’t on reaching a solution, but on how you get there.

This is the trickiest part of the case interview and the single most common reason candidates fail.

We discuss how to properly structure a case in more detail in section three. In terms of what your interviewer is looking for at high level, though, key pieces of your structure should be:

• Proper understanding of the objective of the case - Ask yourself: "What is the single crucial piece of advice that the client absolutely needs?"
• Identification of the drivers - Ask yourself: "What are the key forces that play a role in defining the outcome?"

Our Problem Driven Structure method, discussed in section three, bakes this approach in at a fundamental level. This is as opposed to the framework-based approach you will find in older case-solving

Focus on going through memorised sequences of steps too-often means failing to develop a full understanding of the case and the real key drivers.

At this link, we run through a case to illustrate the difference between a standard framework-based approach and our Problem Driven Structure method.

2.1.3. Problem Solving

You’ll be tested on your ability to identify problems and drivers, isolate causes and effects, demonstrate creativity and prioritise issues. In particular, the interviewer will look for the following skills:

• Prioritisation - Can you distinguish relevant and irrelevant facts?
• Connecting the dots - Can you connect new facts and evidence to the big picture?
• Establishing conclusions - Can you establish correct conclusions without rushing to inferences not supported by evidence?

2.1.4. Numerical Agility

In case interviews, you are expected to be quick and confident with both precise and approximated numbers. This translates to:

• Performing simple calculations quickly - Essential to solve cases quickly and impress clients with quick estimates and preliminary conclusions.
• Analysing data - Extract data from graphs and charts, elaborate and draw insightful conclusions.
• Solving business problems - Translate a real world case to a mathematical problem and solve it.

Our article on consulting math is a great resource here, though the extensive math content in our MCC Academy is the best and most comprehensive material available.

2.1.5. Communication

Real consulting work isn’t just about the raw analysis to come up with a recommendation - this then needs to be sold to the client as the right course of action.

Similarly, in a case interview, you must be able to turn your answer into a compelling recommendation. This is just as essential to impressing your interviewer as your structure and analysis.

Consultants already comment on how difficult it is to find candidates with the right communication skills. Add to this the current direction of travel, where AI will be able to automate more and more of the routine analytic side of consulting, and communication becomes a bigger and bigger part of what consultants are being paid for.

So, how do you make sure that your recommendations are relevant, smart, and engaging? The answer is to master what is known as CEO-level communication .

This art of speaking like a CEO can be quite challenging, as it often involves presenting information in effectively the opposite way to how you might normally.

To get it right, there are three key areas to focus on in your communications:

• Top down : A CEO wants to hear the key message first. They will only ask for more details if they think that will actually be useful. Always consider what is absolutely critical for the CEO to know, and start with that. You can read more in our article on the Pyramid Principle .
• Concise : This is not the time for "boiling the ocean" or listing an endless number possible solutions. CEOs, and thus consultants, want a structured, quick and concise recommendation for their business problem, that they can implement immediately.
• Fact-based : Consultants share CEOs' hatred of opinions based on gut feel rather than facts. They want recommendations based on facts to make sure they are actually in control. Always go on to back up your conclusions with the relevant facts.

Being concise and to the point is key in many areas, networking being one for them. For more detail on all this, check out our full article on delivering recommendations .

Prep the right way

3. types of case interview.

While most case interviews share a similar structure, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

As we’ll see, these differences aren’t hugely impactful in terms of how you prepare. That said, it's always good to know as much as possible about what you will be going up against.

3.1. Different case objectives

A guiding thread throughout this article and our approach in general will be to treat each case as a self-contained problem and not try to pigeonhole it into a certain category. Having said that, there are of course similarities between cases and we can identify certain parameters and objectives.

Broadly speaking, cases can be divided into issue-based cases and strategic decision cases. In the former you will be asked to solve a certain issue, such as declining profits, or low productivity whereas in the latter you will be ask whether your client should or should not do something, such as enter a specific market or acquire another company. The chart below is a good breakdown of these different objectives:

3.2. How do interviewers craft cases

While interviewers will very likely be given a case bank to choose from by their company, a good number of them will also choose to adapt the cases they would currently be working on to a case interview setting. The difference is that the latter cases will be harder to pigeonhole and apply standard frameworks to, so a tailored approach will be paramount.

If you’ve applied for a specific practice or type of consulting - such as operational consulting, for example - it’s very likely that you will receive a case geared towards that particular area alongside a ‘generalist’ consulting case (however, if that’s the case, you will generally be notified). The other main distinction when it comes to case interviews is between interviewer-led and candidate-led.

3.3. Candidate-led cases

Most consulting case interview questions test your ability to crack a broad problem, with a case prompt often going something like:

" How much would you pay to secure the rights to run a restaurant in the British Museum? "

You, as a candidate, are then expected to identify your path to solve the case (that is, provide a structure), leveraging your interviewer to collect the data and test your assumptions.

This is known as a “candidate-led” case interview and is used by Bain, BCG and other firms. From a structuring perspective, it’s easier to lose direction in a candidate-led case as there are no sign-posts along the way. As such, you need to come up with an approach that is both broad enough to cover all of the potential drivers in a case but also tailored enough to the problem you are asked to solve. It’s also up to you to figure out when you need to delve deeper into a certain branch of the case, brainstorm or ask for data. The following case from Bain is an excellent example on how to navigate a candidate-led case.

3.4. Interviewer-led cases

This type of case - employed most famously by McKinsey - is slightly different, with the interviewer controlling the pace and direction of the conversation much more than with other case interviews.

At McKinsey, your interviewer will ask you a set of pre-determined questions, regardless of your initial structure. For each question, you will have to understand the problem, come up with a mini structure, ask for additional data (if necessary) and come to the conclusion that answers the question. This more structured format of case also shows up in online cases by other firms - notably including BCG’s Casey chatbot (with the amusing result that practising McKinsey-style cases can be a great addition when prepping for BCG).

Essentially, these interviewer-led case studies are large cases made up of lots of mini-cases. You still use basically the same method as you would for standard (or candidate-led) cases - the main difference is simply that, instead of using that method to solve one big case, you are solving several mini-cases sequentially. These cases are easier to follow as the interviewer will guide you in the right direction. However, this doesn’t mean you should pay less attention to structure and deliver a generic framework! Also, usually (but not always!) the first question will ask you to map your approach and is the equivalent of the structuring question in candidate-led cases. Sometimes, if you’re missing key elements, the interviewer might prompt you in the right direction - so make sure to take those prompts seriously as they are there to help you get back on track (ask for 30 seconds to think on the prompt and structure your approach). Other times - and this is a less fortunate scenario - the interviewer might say nothing and simply move on to the next question. This is why you should put just as much thought (if not more) into the framework you build for interviewer-led cases , as you may be penalized if you produce something too generic or that doesn’t encompass all the issues of the case.

3.5. Case and fit

The standard case interview can be thought of as splitting into two standalone sub-interviews. Thus “case interviews” can be divided into the case study itself and a “fit interview” section, where culture fit questions are asked.

This can lead to a bit of confusion, as the actual case interview component might take up as little as half of your scheduled “case interview”. You need to make sure you are ready for both aspects.

To illustrate, here is the typical case interview timeline:

• First 15-30 minutes: Fit Interview - with questions assessing your motivation to be a consultant in that specific firm and your traits around leadership and teamwork. Learn more about the fit interview in our in-depth article here .
• Next 30-40 minutes: Case Interview - solving a case study
• Last 5 minutes: Fit Interview again - this time focussing on your questions for your interviewer.

Both the Case and Fit interviews play crucial roles in the finial hiring decision. There is no “average” taken between case and fit interviews: if your performance is not up to scratch in either of the two, you will not be able to move on to the next interview round or get an offer.

NB: No case without fit

Note that, even if you have only been told you are having a case interview or otherwise are just doing a case study, always be prepared to answer fit questions. At most firms, it is standard practice to include some fit questions in all case interviews, even if there are also separate explicit fit interviews, and interviewers will almost invariably include some of these questions around your case. This is perfectly natural - imagine how odd and artificial it would be to show up to an interview, simply do a case and leave again, without talking about anything else with the interviewer before or after.

3.5.1 Differences between firms

For the most part, a case interview is a case interview. However, firms will have some differences in the particular ways they like to do things in terms of both the case study and the fit component.

3.5.2. The McKinsey PEI

McKinsey brands its fit aspect of interviews as the Personal Experience Interview or PEI. Despite the different name, this is really much the same interview you will be going up against in Bain, BCG and any similar firms.

McKinsey does have a reputation for pushing candidates a little harder with fit or PEI questions , focusing on one story per interview and drilling down further into the specific details each time. We discuss this tendency more in our fit interview article . However, no top end firm is going to go easy on you and you should absolutely be ready for the same level of grilling at Bain, BCG and others. Thus any difference isn’t hugely salient in terms of prep.

3.6. What is different in 2023?

For the foreseeable future, you are going to have to go through multiple live case interviews to secure any decent consulting job. These might increasingly happen via Zoom rather than in person, but they should remain largely the same otherwise.

However, things are changing and the rise of AI in recent months seems pretty much guaranteed to accelerate existing trends.

Even before the explosive development of AI chatbots like ChatGPT we have seen in recent months, automation was already starting to change the recruitment process.

As we mentioned, case interviews are expensive and inconvenient for firms to run . Ideally, then, firms will try to reduce the number of interviews required for recruitment as far as possible. For many years, tests of various kinds served to cut down the applicant pool and thus the number of interviews. However, these tests had a limited capacity to assess candidates against the full consulting skillset in the way that case interviews do so well.

More recently, though, the development of online testing has allowed for more and more advanced assessments. Top consulting firms have been leveraging screening tests that better and better capture the same skillset as case interviews. Eventually this is converging on automated case studies. We see this very clearly with the addition of the Redrock case to McKinsey’s Solve assessment.

As these digital cases become closer to the real thing, the line between test and case interview blurs. Online cases don’t just reduce the number of candidates to case interview, but start directly replacing them.

Case in point here is BCG’s Casey chatbot . Previously, BCG had deployed less advanced online cases and similar tests to weed out some candidates before live case interviews began. Now, though, Casey actually replaces one first round case interview.

Casey, at time of writing, is still a relatively “basic” chatbot, basically running through a pre-set script. The Whatsapp-like interface does a lot of work to make it feel like one is chatting to a “real person” - the chatbot itself, though, cannot provide feedback or nudges to candidates as would a human interviewer.

We fully expect that, as soon as BCG and other firms can train a truer AI, these online cases will become more widespread and start replacing more live interviews.

We discuss the likely impacts of advanced AI on consulting recruitment and the industry more broadly in our blog.

Here, though, the real message is that you should expect to run into digital cases as well as traditional case interviews.

Luckily, despite any changes in specific case interview format, you will still need to master the same fundamental skills and prepare in much the same way.

We’ll cover a few ways to help prepare for chatbot cases in section four. Ultimately, though, firms are looking for the same problem solving ability and mindset as a real interviewer. Especially as chatbots get better at mimicking a real interviewer, candidates who are well prepared for case cracking in general should have no problem with AI administered cases.

3.6.1. Automated fit interviews

Analogous to online cases, in recent years there has been a trend towards automated, “one way” fit interviews, with these typically being administered for consultancies by specialist contractors like HireVue or SparkHire.

These are kind of like Zoom interviews, but if the interviewer didn’t show up. Instead you will be given fit questions to answer and must record your answer in your computer webcam. Your response will then go on to be assessed by an algorithm, scoring both what you say and how you say it.

Again, with advances in AI, it is easy to imagine these automated case interviews going from fully scripted interactions, where all candidates are asked the same list of questions, to a more interactive experience. Thus, we might soon arrive at a point where you are being grilled on the details of your stories - McKinsey PEI style - but by a bot rather than a human.

We include some tips on this kind of “one way” fit interview in section six here.

4. How to solve cases with the Problem-Driven Structure?

If you look around online for material on how to solve case studies, a lot of what you find will set out framework-based approaches. However, as we have mentioned, these frameworks tend to break down with more complex, unique cases - with these being exactly the kind of tough case studies you can expect to be given in your case interviews.

To address this problem, the MyConsultingCoach team has synthesized a new approach to case cracking that replicates how top management consultants approach actual engagements.

MyConsultingCoach’s Problem Driven Structure approach is a universal problem solving method that can be applied to any business problem , irrespective of its nature.

As opposed to just selecting a generic framework for each case interview, the Problem Driven Structure approach works by generating a bespoke structure for each individual question and is a simplified version of the roadmap McKinsey consultants use when working on engagements.

The canonical seven steps from McKinsey on real projects are simplified to four for case interview questions, as the analysis required for a six-month engagement is somewhat less than that needed for a 45-minute case study. However, the underlying flow is the same (see the method in action in the video below)

Let's zoom in to see how our method actually works in more detail:

4.1. Identify the problem

Identifying the problem means properly understanding the prompt/question you are given, so you get to the actual point of the case.

This might sound simple, but cases are often very tricky, and many candidates irretrievably mess things up within the first few minutes of starting. Often, they won’t notice this has happened until they are getting to the end of their analysis. Then, they suddenly realise that they have misunderstood the case prompt - and have effectively been answering the wrong question all along!

With no time to go back and start again, there is nothing to do. Even if there were time, making such a silly mistake early on will make a terrible impression on their interviewer, who might well have written them off already. The interview is scuppered and all the candidate’s preparation has been for nothing.

This error is so galling as it is so readily avoidable.

Our method prevents this problem by placing huge emphasis on a full understanding of the case prompt. This lays the foundations for success as, once we have identified the fundamental, underlying problem our client is facing, we focus our whole analysis around finding solutions to this specific issue.

Now, some case interview prompts are easy to digest. For example, “Our client, a supermarket, has seen a decline in profits. How can we bring them up?”. However, many of the prompts given in interviews for top firms are much more difficult and might refer to unfamiliar business areas or industries. For example, “How much would you pay for a banking license in Ghana?” or “What would be your key areas of concern be when setting up an NGO?”

Don’t worry if you have no idea how you might go about tackling some of these prompts!

In our article on identifying the problem and in our full lesson on the subject in our MCC Academy course, we teach a systematic, four step approach to identifying the problem , as well as running through common errors to ensure you start off on the right foot every time!

This is summarised here:

Following this method lets you excel where your competitors mess up and get off to a great start in impressing your interviewer!

4.2. Build your problem driven structure

After you have properly understood the problem, the next step is to successfully crack a case is to draw up a bespoke structure that captures all the unique features of the case.

This is what will guide your analysis through the rest of the case study and is precisely the same method used by real consultants working on real engagements.

Of course, it might be easier here to simply roll out one an old-fashioned framework, and a lot of candidates will do so. This is likely to be faster at this stage and requires a lot less thought than our problem-driven structure approach.

However, whilst our problem driven structure approach requires more work from you, our method has the advantage of actually working in the kind of complex case studies where generic frameworks fail - that is exactly the kind of cases you can expect at an MBB interview .

Since we effectively start from first principles every time, we can tackle any case with the same overarching method. Simple or complex, every case is the same to you and you don’t have to gamble a job on whether a framework will actually work

4.2.1 Issue trees

Issue trees break down the overall problem into a set of smaller problems that you can then solve individually. Representing this on a diagram also makes it easy for both you and your interviewer to keep track of your analysis.

To see how this is done, let’s look at the issue tree below breaking down the revenues of an airline:

These revenues can be segmented as the number of customers multiplied by the average ticket price. The number of customers can be further broken down into a number of flights multiplied by the number of seats, times average occupancy rate. The node corresponding to the average ticket price can then be segmented further.

4.2.2 Hypothesis trees

Hypothesis trees are similar, the only difference being that rather than just trying to break up the issue into smaller issues you are assuming that the problem can be solved and you are formulating solutions.

In the example above, you would assume revenues can be increased by either increasing the average ticket price or the number of customers . You can then hypothesize that you can increase the average occupancy rate in three ways: align the schedule of short and long haul flights, run a promotion to boost occupancy in off-peak times, or offer early bird discounts.

4.2.3 Other structures:structured lists

Structured lists are simply subcategories of a problem into which you can fit similar elements. This McKinsey case answer starts off by identifying several buckets such as retailer response, competitor response, current capabilities and brand image and then proceeds to consider what could fit into these categories.

Buckets can be a good way to start the structure of a complex case but when using them it can be very difficult to be MECE and consistent, so you should always aim to then re-organize them into either an issue or a hypothesis tree.

It is worth noting that the same problem can be structured in multiple valid ways by choosing different means to segment the key issues. Ultimately all these lists are methods to set out a logical hierachy among elements.

4.2.4 Structures in practice

That said, not all valid structures are equally useful in solving the underlying problem. A good structure fulfils several requirements - including MECE-ness , level consistency, materiality, simplicity, and actionability. It’s important to put in the time to master segmentation, so you can choose a scheme isn’t only valid, but actually useful in addressing the problem.

After taking the effort to identify the problem properly, an advantage of our method is that it will help ensure you stay focused on that same fundamental problem throughout. This might not sound like much, but many candidates end up getting lost in their own analysis, veering off on huge tangents and returning with an answer to a question they weren’t asked.

Another frequent issue - particularly with certain frameworks - is that candidates finish their analysis and, even if they have successfully stuck to the initial question, they have not actually reached a definite solution. Instead, they might simply have generated a laundry list of pros and cons, with no clear single recommendation for action.

Clients employ consultants for actionable answers, and this is what is expected in the case interview. The problem driven structure excels in ensuring that everything you do is clearly related back to the key question in a way that will generate a definitive answer. Thus, the problem driven structure builds in the hypothesis driven approach so characteristic of real consulting practice.

You can learn how to set out your own problem driven structures in our article here and in our full lesson in the MCC Academy course.

4.2. Lead the analysis

A problem driven structure might ensure we reach a proper solution eventually, but how do we actually get there?

We call this step " leading the analysis ", and it is the process whereby you systematically navigate through your structure, identifying the key factors driving the issue you are addressing.

Generally, this will mean continuing to grow your tree diagram, further segmenting what you identify as the most salient end nodes and thus drilling down into the most crucial factors causing the client’s central problem.

Once you have gotten right down into the detail of what is actually causing the company’s issues, solutions can then be generated quite straightforwardly.

To see this process in action, we can return to our airline revenue example:

Let’s say we discover the average ticket price to be a key issue in the airline’s problems. Looking closer at the drivers of average ticket price, we find that the problem lies with economy class ticket prices. We can then further segment that price into the base fare and additional items such as food.

Having broken down the issue to such a fine-grained level and considering the 80/20 rule(see below), solutions occur quite naturally. In this case, we can suggest incentivising the crew to increase onboard sales, improving assortment in the plane, or offering discounts for online purchases.

Our article on leading the analysis is a great primer on the subject, with our video lesson in the MCC Academy providing the most comprehensive guide available.

4.4. Provide recommendations

So you have a solution - but you aren’t finished yet!

Now, you need to deliver your solution as a final recommendation.

This should be done as if you are briefing a busy CEO and thus should be a one minute, top-down, concise, structured, clear, and fact-based account of your findings.

The brevity of the final recommendation belies its importance. In real life consulting, the recommendation is what the client has potentially paid millions for - from their point of view, it is the only thing that matters.

In a case interview, your performance in this final summing up of your case is going to significantly colour your interviewer’s parting impression of you - and thus your chances of getting hired!

So, how do we do it right?

Barbara Minto's Pyramid Principle elegantly sums up almost everything required for a perfect recommendation. The answer comes first , as this is what is most important. This is then supported by a few key arguments , which are in turn buttressed by supporting facts .

Across the whole recommendation, the goal isn’t to just summarise what you have done. Instead, you are aiming to synthesize your findings to extract the key "so what?" insight that is useful to the client going forward.

All this might seem like common sense, but it is actually the opposite of how we relay results in academia and other fields. There, we typically move from data, through arguments and eventually to conclusions. As such, making good recommendations is a skill that takes practice to master.

We can see the Pyramid Principle illustrated in the diagram below:

To supplement the basic Pyramid Principle scheme, we suggest candidates add a few brief remarks on potential risks and suggested next steps . This helps demonstrate the ability for critical self-reflection and lets your interviewer see you going the extra mile.

The combination of logical rigour and communication skills that is so definitive of consulting is particularly on display in the final recommendation.

Despite it only lasting 60 seconds, you will need to leverage a full set of key consulting skills to deliver a really excellent recommendation and leave your interviewer with a good final impression of your case solving abilities.

Our specific article on final recommendations and the specific video lesson on the same topic within our MCC Academy are great, comprehensive resources. Beyond those, our lesson on consulting thinking and our articles on MECE and the Pyramid Principle are also very useful.

4.5. What if I get stuck?

Naturally with case interviews being difficult problems there may be times where you’re unsure what to do or which direction to take. The most common scenario is that you will get stuck midway through the case and there are essentially two things that you should do:

• 1. Go back to your structure
• 2. Ask the interviewer for clarification

Your structure should always be your best friend - after all, this is why you put so much thought and effort into it: if it’s MECE it will point you in the right direction. This may seem abstract but let’s take the very simple example of a profitability case interview: if you’ve started your analysis by segmenting profit into revenue minus costs and you’ve seen that the cost side of the analysis is leading you nowhere, you can be certain that the declining profit is due to a decline in revenue.

Similarly, when you’re stuck on the quantitative section of the case interview, make sure that your framework for calculations is set up correctly (you can confirm this with the interviewer) and see what it is you’re trying to solve for: for example if you’re trying to find what price the client should sell their new t-shirt in order to break even on their investment, you should realize that what you’re trying to find is the break even point, so you can start by calculating either the costs or the revenues. You have all the data for the costs side and you know they’re trying to sell 10.000 pairs so you can simply set up the equation with x being the price.

As we’ve emphasised on several occasions, your case interview will be a dialogue. As such, if you don’t know what to do next or don’t understand something, make sure to ask the interviewer (and as a general rule always follow their prompts as they are trying to help, not trick you). This is especially true for the quantitative questions, where you should really understand what data you’re looking at before you jump into any calculations. Ideally you should ask your questions before you take time to formulate your approach but don’t be afraid to ask for further clarification if you really can’t make sense of what’s going on. It’s always good to walk your interviewer through your approach before you start doing the calculations and it’s no mistake to make sure that you both have the same understanding of the data. For example when confronted with the chart below, you might ask what GW (in this case gigawatt) means from the get-go and ask to confirm the different metrics (i.e. whether 1 GW = 1000 megawatts). You will never be penalised for asking a question like that.

5. What to remember in case interviews

If you’re new to case cracking you might feel a bit hopeless when you see a difficult case question, not having any idea where to start.

In fact though, cracking case interviews is much like playing chess. The rules you need to know to get started are actually pretty simple. What will make you really proficient is time and practice.

In this section, we’ll run through a high level overview of everything you need to know, linking to more detailed resources at every step.

5.1. An overall clear structure

You will probably hear this more than you care for but it is the most important thing to keep in mind as you start solving cases, as not only it is a key evaluation criterion but the greatest tool you will have at your disposal. The ability to build a clear structure in all aspects of the case inteview will be the difference between breezing through a complicated case and struggling at its every step. Let’s look a bit closer at the key areas where you should be structured!

5.1.1 Structured notes

Every case interview starts with a prompt, usually verbal, and as such you will have to take some notes. And here is where your foray into structure begins, as the notes you take should be clear, concise and structured in a way that will allow you to repeat the case back to the interviewer without writing down any unnecessary information.

This may sound very basic but you should absolutely not be dismissive about it: taking clear and organized notes will allow what we found helps is to have separate sections for:

• The case brief
• Follow-up questions and answers
• Numerical data
• Case structure (the most crucial part when solving the case)
• Any scrap work during the case (usually calculations)

When solving the case - or, as we call it here, in the Lead the analysis step, it is highly recommended to keep on feeding and integrating your structure, so that you never get lost. Maintaining a clear high level view is one of the most critical aspects in case interviews as it is a key skill in consulting: by constantly keeping track of where you are following your structure, you’ll never lose your focus on the end goal.

In the case of an interviewer-led case, you can also have separate sheets for each question (e.g. Question 1. What factors can we look at that drive profitability?). If you develop a system like this you’ll know exactly where to look for each point of data rather than rummage around in untidy notes. There are a couple more sections that you may have, depending on preference - we’ll get to these in the next sections.

5.1.2 Structured communication

There will be three main types of communication in cases:

• 1. Asking and answering questions
• 2. Walking the interviewer through your structure (either the case or calculation framework - we’ll get to that in a bit!)
• 3. Delivering your recommendation

Asking and answering questions will be the most common of these and the key thing to do before you speak is ask for some time to collect your thoughts and get organised. What you want to avoid is a ‘laundry list’ of questions or anything that sounds too much like a stream of consciousness.

Different systems work for different candidates but a sure-fire way of being organised is numbering your questions and answers. So rather than saying something like ‘I would like to ask about the business model, operational capacity and customer personas’ it’s much better to break it down and say something along the lines of ‘I’ve got three key questions. Firstly I would like to inquire into the business model of our client. Secondly I would like to ask about their operational capacity. Thirdly I would like to know more about the different customer personas they are serving’.

A similar principle should be applied when walking the interviewer through your structure, and this is especially true of online case interviews (more and more frequent now) when the interviewer can’t see your notes. Even if you have your branches or buckets clearly defined, you should still use a numbering system to make it obvious to the interviewer. So, for example, when asked to identify whether a company should make an acquisition, you might say ‘I would like to examine the following key areas. Firstly the financial aspects of this issue, secondly the synergies and thirdly the client’s expertise’

The recommendation should be delivered top-down (see section 4.4 for specifics) and should employ the same numbering principle. To do so in a speedy manner, you should circle or mark the key facts that you encounter throughout the case so you can easily pull them out at the end.

5.1.3 Structured framework

It’s very important that you have a systematic approach - or framework - for every case. Let’s get one thing straight: there is a difference between having a problem-solving framework for your case and trying to force a case into a predetermined framework. Doing the former is an absolute must , whilst doing the latter will most likely have you unceremoniously dismissed.

We have seen there are several ways of building a framework, from identifying several categories of issues (or ‘buckets’) to building an issue or hypothesis tree (which is the most efficient type of framework). For the purpose of organization, we recommend having a separate sheet for the framework of the case, or, if it’s too much to manage, you can have it on the same sheet as the initial case prompt. That way you’ll have all the details as well as your proposed solution in one place.

5.1.4 Structured calculations

Whether it’s interviewer or candidate-led, at some point in the case you will get a bunch of numerical data and you will have to perform some calculations (for the specifics of the math you’ll need on consulting interviews, have a look at our Consulting Math Guide ). Here’s where we urge you to take your time and not dive straight into calculating! And here’s why: while your numerical agility is sure to impress interviewers, what they’re actually looking for is your logic and the calculations you need to perform in order to solve the problem . So it’s ok if you make a small mistake, as long as you’re solving for the right thing.

As such, make it easy for them - and yourself. Before you start, write down in steps the calculations you need to perform. Here’s an example: let’s say you need to find out by how much profits will change if variable costs are reduced by 10%. Your approach should look something like:

• 1. Calculate current profits: Profits = Revenues - (Variable costs + Fixed costs)
• 2. Calculate the reduction in variable costs: Variable costs x 0.9
• 3. Calculate new profits: New profits = Revenues - (New variable costs + Fixed costs)

Of course, there may be more efficient ways to do that calculation, but what’s important - much like in the framework section - is to show your interviewer that you have a plan, in the form of a structured approach. You can write your plan on the sheet containing the data, then perform the calculations on a scrap sheet and fill in the results afterward.

5.2. Common business knowledge and formulas

Although some consulting firms claim they don’t evaluate candidates based on their business knowledge, familiarity with basic business concepts and formulae is very useful in terms of understanding the case studies you are given in the first instance and drawing inspiration for structuring and brainstorming.

If you are coming from a business undergrad, an MBA or are an experienced hire, you might well have this covered already. For those coming from a different background, it may be useful to cover some.

Luckily, you don’t need a degree-level understanding of business to crack case interviews , and a lot of the information you will pick up by osmosis as you read through articles like this and go through cases.

However, some things you will just need to sit down and learn. We cover everything you need to know in some detail in our Case Academy Course course. However, some examples here of things you need to learn are:

• Basic accounting (particularly how to understand all the elements of a balance sheet)
• Basic economics
• Basic marketing
• Basic strategy

Below we include a few elementary concepts and formulae so you can hit the ground running in solving cases. We should note that you should not memorise these and indeed a good portion of them can be worked out logically, but you should have at least some idea of what to expect as this will make you faster and will free up much of your mental computing power. In what follows we’ll tackle concepts that you will encounter in the private business sector as well as some situations that come up in cases that feature clients from the NGO or governmental sector.

5.2.1 Business sector concepts

These concepts are the bread and butter of almost any business case so you need to make sure you have them down. Naturally, there will be specificities and differences between cases but for the most part here is a breakdown of each of them.

5.2.1.1. Revenue

The revenue is the money that the company brings in and is usually equal to the number of products they sell multiplied to the price per item and can be expressed with the following equation:

Revenue = Volume x Price

Companies may have various sources of revenue or indeed multiple types of products, all priced differently which is something you will need to account for in your case interview. Let’s consider some situations. A clothing company such as Nike will derive most of their revenue from the number of products they sell times the average price per item. Conversely, for a retail bank revenue is measured as the volume of loans multiplied by the interest rate at which the loans are given out. As we’ll see below, we might consider primary revenues and ancillary revenues: in the case of a football club, we might calculate primary revenues by multiplying the number of tickets sold by the average ticket price, and ancillary revenues those coming from sales of merchandise (similarly, let’s say average t-shirt price times the number of t-shirts sold), tv rights and sponsorships.

These are but a few examples and another reminder that you should always aim to ask questions and understand the precise revenue structure of the companies you encounter in cases.

5.2.1.2. Costs

The costs are the expenses that a company incurs during its operations. Generally, they can be broken down into fixed and variable costs :

Costs = Fixed Costs + Variable Costs

As their name implies, fixed costs do not change based on the number of units produced or sold. For example, if you produce shoes and are renting the space for your factory, you will have to pay the rent regardless of whether you produce one pair or 100. On the other hand, variable costs depend on the level of activity, so in our shoe factory example they would be equivalent to the materials used to produce each pair of shoes and would increase the more we produce.

These concepts are of course guidelines used in order to simplify the analysis in cases, and you should be aware that in reality often the situation can be more complicated. However, this should be enough for case interviews. Costs can also be quasi-fixed, in that they increase marginally with volume. Take the example of a restaurant which has a regular staff, incurring a fixed cost but during very busy hours or periods they also employ some part-time workers. This cost is not exactly variable (as it doesn’t increase with the quantity of food produced) but also not entirely fixed, as the number of extra hands will depend on how busy the restaurant is. Fixed costs can also be non-linear in nature. Let’s consider the rent in the same restaurant: we would normally pay a fixed amount every month, but if the restaurant becomes very popular we might need to rent out some extra space so the cost will increase. Again, this is not always relevant for case interviews.

5.2.1.3. Profit and profit margin

The profit is the amount of money a company is left with after it has paid all of its expenses and can be expressed as follows:

Profit = Revenue - Costs

It’s very likely that you will encounter a profitability issue in one of your case interviews, namely you will be asked to increase a company’s profit. There are two main ways of doing this: increasing revenues and reducing costs , so these will be the two main areas you will have to investigate. This may seem simple but what you will really need to understand in a case are the key drivers of a business (and this should be done through clarifying questions to the interviewer - just as a real consultant would question their client).

For example, if your client is an airline you can assume that the main source of revenue is sales of tickets, but you should inquire how many types of ticket the specific airline sells. You may naturally consider economy and business class tickets, but you may find out that there is a more premium option - such as first class - and several in-between options. Similarly to our football club example, there may be ancillary revenues from selling of food and beverage as well as advertising certain products or services on flights.

You may also come across the profit margin in case interviews. This is simply the percentage of profit compared to the revenue and can be expressed as follows:

Profit margin = Profit/Revenue x 100

5.2.1.4. Break-even point

An ancillary concept to profit, the break-even point is the moment where revenues equal costs making the profit zero and can be expressed as the following equation:

Revenues = Costs (Fixed costs + Variable costs)

This formula will be useful when you are asked questions such as ‘What is the minimum price I should sell product X?’ or ‘What quantity do I need to sell in order to recoup my investment?’. Let’s say in a case interview an owner of a sandwich store asks us to figure out how many salami and cheese salami sandwiches she needs to sell in order to break even. She’s spending $4 on salami and $2 for cheese and lettuce per sandwich, and believes she can sell the sandwiches at around $7. The cost of utilities and personnel is around $5000 per month. We could lay this all out in the break-even equation:

7 x Q ( quantity ) = (4+2) x Q + 5000 ( variable + fixed costs )

In a different scenario, we may be asked to calculate the break-even price . Let’s consider our sandwich example and say our owner knows she has enough ingredients for about 5000 sandwiches per month but is not sure how much to sell them for. In that case, if we know our break-even equation, we can simply make the following changes:

P ( price ) x 5000 = (4+2) x 5000 + 5000

By solving the equation we get to the price of $7 per sandwich.

5.2.1.5. Market share and market size

We can also consider the market closely with profit, as in fact the company’s performance in the market is what drives profits. The market size is the total number of potential customers for a certain business or product, whereas the market share is the percentage of that market that your business controls (or could control, depending on the case).

There is a good chance you will have to estimate the market size in one of your case interviews and we get into more details on how to do that below. You may be asked to estimate this in either number of potential customers or total value . The latter simply refers to the number of customers multiplied by the average value of the product or service.

To calculate the market share you will have to divide the company’s share by the total market size and multiply by 100:

Note, though, that learning the very basics of business is the beginning rather than the end of your journey. Once you are able to “speak business” at a rudimentary level, you should try to “become fluent” and immerse yourself in reading/viewing/listening to as wide a variety of business material as possible, getting a feel for all kinds of companies and industries - and especially the kinds of problems that can come up in each context and how they are solved. The material put out by the consulting firms themselves is a great place to start, but you should also follow the business news and find out about different companies and sectors as much as possible between now and interviews. Remember, if you’re going to be a consultant, this should be fun rather than a chore!

5.3 Public sector and NGO concepts

As we mentioned, there will be some cases (see section 6.6 for a more detailed example) where the key performance indicators (or KPIs in short) will not be connected to profit. The most common ones will involve the government of a country or an NGO, but they can be way more diverse and require more thought and application of first principles. We have laid out a couple of the key concepts or KPIs that come up below

5.3.1 Quantifiability

In many such scenarios you will be asked to make an important strategic decision of some kind or to optimise a process. Of course these are not restricted to non-private sector cases but this is where they really come into their own as there can be great variation in the type of decision and the types of field.

While there may be no familiar business concepts to anchor yourself onto, a concept that is essential is quantifiability . This means, however qualitative the decision might seem, consultants rely on data so you should always aim to have aspects of a decision that can be quantified, even if the data doesn’t present itself in a straightforward manner.

Let’s take a practical example. Your younger sibling asks you to help them decide which university they should choose if they want to study engineering. One way to structure your approach would be to segment the problem into factors affecting your sibling’s experience at university and experience post-university. Within the ‘at uni’ category you might think about the following:

• Financials : How much are tuition costs and accommodation costs?
• Quality of teaching and research : How are possible universities ranked in the QS guide based on teaching and research?
• Quality of resources : How well stocked is their library, are the labs well equipped etc.?
• Subject ranking : How is engineering at different unis ranked?
• Life on campus and the city : What are the living costs in the city where the university is based? What are the extracurricular opportunities and would your sibling like to live in that specific city based on them?

Within the ‘out of uni’ category you might think about:

• Exit options : What are the fields in which your sibling could be employed and how long does it take the average student of that university to find a job?
• Alumni network : What percentage of alumni are employed by major companies?
• Signal : What percentage of applicants from the university get an interview in major engineering companies and related technical fields?

You will perhaps notice that all the buckets discussed pose quantifiable questions meant to provide us with data necessary to make a decision. It’s no point to ask ‘Which university has the nicest teaching staff?’ as that can be a very subjective metric.

5.3.1 Impact

Another key concept to consider when dealing with sectors other than the private one is how impactful a decision or a line of inquiry is on the overarching issue , or whether all our branches in our issue tree have a similar impact. This can often come in the form of impact on lives, such as in McKinsey’s conservation case discussed below, namely how many species can we save with our choice of habitat.

5.4 Common consulting concepts

Consultants use basic business concepts on an every day basis, as they help them articulate their frameworks to problems. However, they also use some consulting specific tools to quality check their analysis and perform in the most efficient way possible. These principles can be applied to all aspects of a consultant’s work, but for brevity we can say they mostly impact a consultant’s systematic approach and communication - two very important things that are also tested in case interviews. Therefore, it’s imperative that you not only get to know them, but learn how and when to use them as they are at the very core of good casing. They are MECE-ness, the Pareto Principle and the Pyramid principle and are explained briefly below - you should, however, go on to study them in-depth in their respective articles.

Perhaps the central pillar of all consulting work and an invaluable tool to solve cases, MECE stands for Mutually Exclusive and Collectively Exhaustive . It can refer to any and every aspect in a case but is most often used when talking about structure. We have a detailed article explaining the concept here , but the short version is that MECE-ness ensures that there is no overlap between elements of a structure (i.e. the Mutually Exclusive component) and that it covers all the drivers or areas of a problem (Collectively Exhaustive). It is a concept that can be applied to any segmentation when dividing a set into subsets that include it wholly but do not overlap.

Let’s take a simple example and then a case framework example. In simple terms, when we are asked to break down the set ‘cars’ into subsets, dividing cars into ‘red cars’ and ‘sports cars’ is neither mutually exclusive (as there are indeed red sports cars) nor exhaustive of the whole set (i.e. there are also yellow non-sports cars that are not covered by this segmentation). A MECE way to segment would be ‘cars produced before 2000’ and ‘cars produced after 2000’ as this segmentation allows for no overlap and covers all the cars in existence.

Dividing cars can be simple, but how can we ensure MECEness in a case-interview a.k.a. a business situation. While the same principles apply, a good tip to ensure that your structure is MECE is to think about all the stakeholders - i.e. those whom a specific venture involves.

Let’s consider that our client is a soda manufacturer who wants to move from a business-to-business strategy, i.e. selling to large chains of stores and supermarkets, to a business-to-consumer strategy where it sells directly to consumers. In doing so they would like to retrain part of their account managers as direct salespeople and need to know what factors to consider.

A stakeholder-driven approach would be to consider the workforce and customers and move further down the issue tree, thinking about individual issues that might affect them. In the case of the workforce, we might consider how the shift would affect their workload and whether it takes their skillset into account. As for the customers, we might wonder whether existing customers would be satisfied with this move: will the remaining B2B account managers be able to provide for the needs of all their clients and will the fact that the company is selling directly to consumers now not cannibalise their businesses? We see how by taking a stakeholder-centred approach we can ensure that every single perspective and potential issue arising from it is fully covered.

5.4.2 The Pareto Principle

Also known as the 80/20 rule, this principle is important when gauging the impact of a decision or a factor in your analysis. It simply states that in business (but not only) 80% of outcomes come from 20% of causes. What this means is you can make a few significant changes that will impact most of your business organisation, sales model, cost structure etc.

Let’s have a look at 3 quick examples to illustrate this:

• 80% of all accidents are caused by 20% of drivers
• 20% of a company’s products account for 80% of the sales
• 80% of all results in a company are driven by 20% of its employees

The 80/20 rule will be a very good guide line in real engagements as well as case interviews, as it will essentially point to the easiest and most straightforward way of doing things. Let’s say one of the questions in a case is asking you to come up with an approach to understand the appeal of a new beard trimmer. Obviously you can’t interview the whole male population so you might think about setting up a webpage and asking people to comment their thoughts. But what you would get would be a laundry list of difficult to sift through data.

Using an 80/20 approach you would segment the population based on critical factors (age groups, grooming habits etc.) and then approach a significant sample size of each (e.g. 20), analysing the data and reaching a conclusion.

5.4.3 The Pyramid Principle

This principle refers to organising your communication in a top-down , efficient manner. While this is generally applicable, the pyramid principle will most often be employed when delivering the final recommendation to your client. This means - as is implicit in the name - that you would organise your recommendation (and communication in general) as a pyramid, stating the conclusion or most important element at the top then go down the pyramid listing 3 supporting arguments and then further (ideally also 3) supporting arguments for those supporting arguments.

Let’s look at this in practice in a case interview context: your client is a German air-conditioning unit manufacturer who was looking to expand into the French market. However, after your analysis you’ve determined that the market share they were looking to capture would not be feasible. A final recommendation using the Pyramid Principle would sound something like this: ‘I recommend that we do not enter the German market for the following three reasons. Firstly, the market is too small for our ambitions of $50 million. Secondly the market is heavily concentrated, being controlled by three major players and our 5 year goal would amount to controlling 25% of the market, a share larger than that of any of the players. Thirdly, the alternative of going into the corporate market would not be feasible, as it has high barriers to entry.Then, if needed, we could delve deeper into each of our categories

6. Case examples or building blocks?

As we mentioned before, in your case interview preparation you will undoubtedly find preparation resources that claim that there are several standard types of cases and that there is a general framework that can be applied to each type of case. While there are indeed cases that are straightforward at least in appearance and seemingly invite the application of such frameworks, the reality is never that simple and cases often involve multiple or more complicated components that cannot be fitted into a simple framework.

At MCC we don’t want you to get into the habit of trying to identify which case type you’re dealing with and pull out a framework, but we do recognize that there are recurring elements in frameworks that are useful - such as the profitability of a venture (with its revenues and costs), the valuation of a business, estimating and segmenting a market and pricing a product.

We call these building blocks because they can be used to build case frameworks but are not a framework in and of themselves, and they can be shuffled around and rearranged in any way necessary to be tailored to our case. Hence, our approach is not to make you think in terms of case types but work from first principles and use these building blocks to build your own framework. Let’s take two case prompts to illustrate our point.

The first is from the Bain website, where the candidate is asked whether they think it’s a good idea for their friend to open a coffee shop in Cambridge UK (see the case here ). The answer framework provided here is a very straightforward profitability analysis framework, examining the potential revenues and potential costs of the venture:

While this is a good point to start for your case interview (especially taken together with the clarifying questions), we will notice that this approach will need more tailoring to the case - for example the quantity of coffee will be determined by the market for coffee drinkers in Cambridge, which we have to determine based on preference. We are in England so a lot of people will be drinking tea but we are in a university town so perhaps more people than average are drinking coffee as it provides a better boost when studying. All these are some much needed case-tailored hypotheses that we can make based on the initial approach.

Just by looking at this case we might be tempted to say that we can just take a profitability case and apply it without any issues. However, this generic framework is just a starting point and in reality we would need to tailor it much further in the way we had started to do in order to get to a satisfactory answer. For example, the framework for this specific case interview doesn’t cover aspects such as the customer’s expertise: does the friend have any knowledge of the coffee business, such as where to source coffee and how to prepare it? Also, we could argue there may be some legal factors to consider here, such as any approvals that they might need from the city council to run a coffee shop on site, or some specific trade licences that are not really covered in the basic profitability framework.

Let’s take a different case , however, from the McKinsey website. In this scenario, the candidate is being asked to identify some factors in order to choose where to focus the client’s conservation efforts. Immediately we can realise that this case doesn’t lend itself to any pre-packaged framework and we will need to come up with something from scratch - and take a look at McKinsey’s answer of the areas to focus on:

We notice immediately that this framework is 100% tailored to the case - of course there are elements which we encounter in other cases, such as costs and risks but again these are applied in an organic way. It’s pretty clear that while no standard framework would work in this case, the aforementioned concepts - costs and risks - and the way to approach them (a.k.a building blocks ) are fundamentally similar throughout cases (with the obvious specificities of each case).

In what follows, we’ll give a brief description of each building block starting from the Bain example discussed previously, in order to give you a general idea of what they are and their adaptability, but you should make sure to follow the link to the in-depth articles to learn all their ins and outs.

6.1 Estimates and segmentation

This building block will come into play mostly when you’re thinking about the market for a certain product (but make sure to read the full article for more details). Let’s take our Bain Cambridge coffee example. As we mentioned under the quantity bucket we need to understand what the market size for coffee in Cambridge would be - so we can make an estimation based on segmentation .

The key to a good estimation is the ability to logically break down the problem into more manageable pieces. This will generally mean segmenting a wider population to find a particular target group. We can start off with the population of Cambridge - which we estimate at 100.000. In reality the population is closer to 150.000 but that doesn’t matter - the estimation has to be reasonable and not accurate , so unless the interviewer gives you a reason to reconsider you can follow your instinct. We can divide that into people who do and don’t drink coffee. Given our arguments before, we can conclude that 80% of those, so 80.000 drink coffee. Then we can further segment into those who drink regularly - let’s say every day - and those who drink occasionally - let’s say once a week. Based on the assumptions before about the student population needing coffee to function, and with Cambridge having a high student population, we can assume that 80% of those drinking coffee are regular drinkers, so that would be 64.000 regular drinkers and 16.000 occasional drinkers. We can then decide whom we want to target what our strategy needs to be:

This type of estimation and segmentation can be applied to any case specifics - hence why it is a building block.

6.2 Profitability

We had several looks at this building block so far (see an in-depth look here ) as it will show up in most case interivew scenarios, since profit is a key element in any company’s strategy. As we have seen, the starting point to this analysis is to consider both the costs and revenues of a company, and try to determine whether revenues need to be improved or whether costs need to be lowered. In the coffee example, the revenues are dictated by the average price per coffe x the number of coffees sold , whereas costs can be split into fixed and variable .

Some examples of fixed costs would be the rent for the stores and the cost of the personnel and utilities, while the most obvious variable costs would be the coffee beans used and the takeaway containers (when needed). We may further split revenues in this case into Main revenues - i.e. the sales of coffee - and Ancillary revenues , which can be divided into Sales of food products (sales of pastries, sandwiches etc., each with the same price x quantity schema) and Revenues from events - i.e renting out the coffee shop to events and catering for the events themselves. Bear in mind that revenues will be heavily influenced by the penetration rate , i.e. the share of the market which we can capture.

6.3 Pricing

Helping a company determine how much they should charge for their goods or services is another theme that comes up frequently in cases. While it may seem less complicated than the other building blocks, we assure you it’s not - you will have to understand and consider several factors, such as the costs a company is incurring, their general strategic positioning, availability, market trends as well as the customers’ willingness to pay (or WTP in short) - so make sure to check out our in-depth guide here .

In our example, we may determine that the cost per cup (coffee beans, staff, rent) is £1. We want to be student friendly so we should consider how much students would want to pay for a coffee as well as how much are competitors are charging. Based on those factors, it would be reasonable to charge on average £2 per cup of coffee. It’s true that our competitors are charging £3 but they are targeting mostly the adult market, whose willingness to pay is higher, so their pricing model takes that into account as well as the lower volume of customers in that demographic.

6.4. Valuation

A variant of the pricing building block, a valuation problem generally asks the candidate to determine how much a client should pay for a specific company (the target of an acquisition) as well as what other factors to consider. The two most important factors (but not the only ones - for a comprehensive review see our Valuation article ) to consider are the net present value (in consulting interviews usually in perpetuity) and the synergies .

In short, the net present value of a company is how much profit it currently brings in, divided by how much that cash flow will depreciate in the future and can be represented with the equation below:

The synergies refer to what could be achieved should the companies operate as one, and can be divided into cost and revenue synergies .

Let’s expand our coffee example a bit to understand these. Imagine that our friend manages to open a chain of coffee shops in Cambridge and in the future considers acquiring a chain of take-out restaurants. The most straightforward example of revenue synergies would be cross-selling, in this case selling coffee in the restaurants as well as in the dedicated stores, and thus getting an immediate boost in market share by using the existing customers of the restaurant chain. A cost synergy would be merging the delivery services of the two businesses to deliver both food and coffee, thus avoiding redundancies and reducing costs associated with twice the number of drivers and vehicles.

6.5. Competitive interaction

This component of cases deals with situations where the market in which a company is operating changes and the company must decide what to do. These changes often have to do with a new player entering the market (again for more details make sure to dive into the Competitive Interaction article ).

Let’s assume that our Cambridge coffee shop has now become a chain and has flagged up to other competitors that Cambridge is a blooming market for coffee. As such, Starbucks has decided to open a few stores in Cambridge themselves, to test this market. The question which might be posed to a candidate is what should our coffee chain do. One way (and a MECE one) to approach the problem is to decide between doing something and doing nothing . We might consider merging with another coffee chain and pooling our resources or playing to our strengths and repositioning ourselves as ‘your student-friendly, shop around the corner’. Just as easily we may just wait the situation out and see whether indeed Starbucks is cutting into our market share - after all, the advantages of our product and services might speak for themselves and Starbucks might end up tanking. Both of these are viable options if argued right and depending on the further specifics of the case.

6.6. Special cases

Most cases deal with private sectors, where the overarching objective entails profit in some form. However, as hinted before, there are cases which deal with other sectors where there are other KPIs in place . The former will usually contain one or several of these building blocks whereas the latter will very likely have neither. This latter category is arguably the one that will stretch your analytical and organisational skills to the limit, since there will be very little familiarity that you can fall back on (McKinsey famously employs such cases in their interview process).

So how do we tackle the structure for such cases? The short answer would be starting from first principles and using the problem driven structure outlined above, but let’s look at a quick example in the form of a McKinsey case :

The first question addressed to the candidate is the following:

This is in fact asking us to build a structure for the case. So what should we have in mind here? Most importantly, we should start with a structure that is MECE and we should remember to do that by considering all the stakeholders . They are on the one hand the government and affiliated institutions and on the other the population. We might then consider which issues might arise for each shareholder and what the benefits for them would be, as well as the risks. This approach is illustrated in the answer McKinsey provides as well:

More than anything, this type of case shows us how important it is to practise and build different types of structures, and think about MECE ways of segmenting the problem.

7. How Do I prepare for case interviews

In consulting fashion, the overall preparation can be structured into theoretical preparation and practical preparation , with each category then being subdivided into individual prep and prep with a partner .

As a general rule, the level and intensity of the preparation will differ based on your background - naturally if you have a business background (and have been part of a consulting club or something similar) your preparation will be less intensive than if you’re starting from scratch. The way we suggest you go about it is to start with theoretical preparation , which means learning about case interviews, business and basic consulting concepts (you can do this using free resources - such as the ones we provide - or if you want a more through preparation you can consider joining our Case Academy as well).

You can then move on to the practical preparation which should start with doing solo cases and focusing on areas of improvement, and then move on to preparation with a partner , which should be another candidate or - ideally - an ex-consultant.

Let’s go into more details with respect to each type of preparation.

7.1. Solo practice

The two most important areas of focus in sole preparation are:

• Mental math

As we mentioned briefly, the best use of your time is to focus on solving cases. You can start with cases listed on MBB sites since they are clearly stated and have worked solutions as well (e.g. Bain is a good place to start) and then move to more complex cases (our Case Library also offers a range of cases of different complexities). To build your confidence, start out on easier case questions, work through with the solutions, and don't worry about time. As you get better, you can move on to more difficult cases and try to get through them more quickly. You should practice around eight case studies on your own to build your confidence.

Another important area of practice is your mental mathematics as this skill will considerably increase your confidence and is neglected by many applicants - much to their immediate regret in the case interview. Find our mental math tool here or in our course, and practice at least ten minutes per day, from day one until the day before the interview.

7.2. Preparation with a partner

There are aspects of a case interview - such as asking clarifying questions - which you cannot do alone and this is why, after you feel comfortable, you should move on to practice with another person. There are two options here:

• Practicing with a peer
• Practicing with an ex-consultant

In theory they can be complementary - especially if you’re peer is also preparing for consulting interviews - and each have advantages and disadvantages. A peer is likely to practice with you for free for longer, however you may end up reinforcing some bad habits or unable to get actionable feedback. A consultant will be able to provide you the latter but having their help for the same number of hours as a peer will come at a higher cost. Let’s look at each option in more detail.

7.2.1. Peer preparation

Once you have worked through eight cases solo, you should be ready to simulate the case interview more closely and start working with another person.

Here, many candidates turn to peer practice - that is, doing mock case interviews with friends, classmates or others also applying to consulting. If you’re in university, and especially in business school, there will very likely be a consulting club for you to join and do lots of case practice with. If you don’t have anyone to practice, though, or if you just want to get a bit more volume in with others, our free meeting board lets you find fellow applicants from around the world with whom to practice. We recommend practicing around 10 to 15 ‘live’ cases to really get to a point where you feel comfortable.

7.2.2. Preparation with a consultant

You can do a lot practising by yourself and with peers. However, nothing will bring up your skills so quickly and profoundly as working with a real consultant.

Perhaps think about it like boxing. You can practice drills and work on punch bags all you want, but at some point you need to get into the ring and do some actual sparring if you ever want to be ready to fight.

Practicing with an ex consultant is essentialy a simulation of a case interview. Of course, it isn’t possible to secure the time of experienced top-tier consultants for free. However, when considering whether you should invest to boost your chances of success, it is worth considering the difference in your salary over even just a few years between getting into a top-tier firm versus a second-tier one. In the light of thousands in increased annual earnings (easily accumulating into millions over multiple years), it becomes clear that getting expert interview help really is one of the best investments you can make in your own future.

Should you decide to make this step, MyConsultingCoach can help, offering bespoke mentoring programmes , where you are paired with a 5+ year experienced, ex-MBB mentor of your choosing, who will then oversee your whole case interview preparation from start to finish - giving you your best possible chance of landing a job!

7.3. Practice for online interviews

Standard preparation for interview case studies will carry directly over to online cases.

However, if you want to do some more specific prep, you can work through cases solo to a timer and using a calculator and/or Excel (online cases generally allow calculators and second computers to help you, whilst these are banned in live case interviews).

Older PST-style questions also make great prep, but a particularly good simulation is the self-assessment tests included in our Case Academy course . These multiple choice business questions conducted with a strict time limit are great preparation for the current crop of online cases.

7.4. Fit interviews

As we’ve noted, even something billed as a case interview is very likely to contain a fit interview as a subset.

We have an article on fit interviews and also include a full set of lessons on how to answer fit questions properly as a subset of our comprehensive Case Academy course .

Here though, the important thing to convey is that you take preparing for fit questions every bit as seriously as you do case prep.

Since they sound the same as you might encounter when interviewing for other industries, the temptation is to regard these as “just normal interview questions”.

However, consulting firms take your answers to these questions a good deal more seriously than elsewhere.

This isn’t just for fluffy “corporate culture” reasons. The long hours and close teamwork, as well as the client-facing nature of management consulting, mean that your personality and ability to get on with others is going to be a big part of making you a tolerable and effective co-worker.

If you know you’ll have to spend 14+ hour working days with someone you hire and that your annual bonus depends on them not alienating clients, you better believe you’ll pay attention to their character in interview.

There are also hard-nosed financial reasons for the likes of McKinsey, Bain and BCG to drill down so hard on your answers.

In particular, top consultancies have huge issues with staff retention. The average management consultant only stays with these firms for around two years before they have moved on to a new industry.

In some cases, consultants bail out because they can’t keep up with the arduous consulting lifestyle of long hours and endless travel. In many instances, though, departing consultants are lured away by exit opportunities - such as the well trodden paths towards internal strategy roles, private equity or becoming a start-up founder.

Indeed, many individuals will intentionally use a two year stint in consulting as something like an MBA they are getting paid for - giving them accelerated exposure to the business world and letting them pivot into something new.

Consulting firms want to get a decent return on investment for training new recruits. Thus, they want hires who not only intend to stick with consulting longer-term, but also have a temperament that makes this feasible and an overall career trajectory where it just makes sense for them to stay put.

This should hammer home the point that, if you want to get an offer, you need to be fully prepared to answer fit questions - and to do so excellently - any time you have a case interview.

8. Interview day - what to expect, with tips

Of course, all this theory is well and good, but a lot of readers might be concerned about what exactly to expect in real life . It’s perfectly reasonable to want to get as clear a picture as possible here - we all want to know what we are going up against when we face a new challenge!

Indeed, it is important to think about your interview in more holistic terms, rather than just focusing on small aspects of analysis. Getting everything exactly correct is less important than the overall approach you take to reasoning and how you communicate - and candidates often lose sight of this fact.

In this section, then, we’ll run through the case interview experience from start to finish, directing you to resources with more details where appropriate. As a supplement to this, the following video from Bain is excellent. It portrays an abridged version of a case interview, but is very useful as a guide to what to expect - not just from Bain, but from McKinsey, BCG and any other high-level consulting firm.

8.1. Getting started

Though you might be shown through to the office by a staff member, usually your interviewer will come and collect you from a waiting area. Either way, when you first encounter them, you should greet your interviewer with a warm smile and a handshake (unless they do not offer their hand). Be confident without verging into arrogance. You will be asked to take a seat in the interviewer’s office, where the case interview can then begin.

8.1.1. First impressions

In reality, your assessment begins before you even sit down at your interviewer’s desk. Whether at a conscious level or not, the impression you make within the first few seconds of meeting your interviewer is likely to significantly inform the final hiring decision (again, whether consciously or not).

Your presentation and how you hold yourself and behave are all important . If this seems strange, consider that, if hired, you will be personally responsible for many clients’ impressions of the firm. These things are part of the job! Much of material on the fit interview is useful here, whilst we also cover first impressions and presentation generally in our article on what to wear to interview .

As we have noted above, your interview might start with a fit segment - that is, with the interviewer asking questions about your experiences, your soft skills, and motivation to want to join consulting generally and that firm in particular. In short, the kinds of things a case study can’t tell them about you. We have a fit interview article and course to get you up to speed here.

8.1.2. Down to business

Following an initial conversation, your interviewer will introduce your case study , providing a prompt for the question you have to answer. You will have a pen and paper in front of you and should (neatly) note down the salient pieces of information (keep this up throughout the interview).

It is crucial here that you don’t delve into analysis or calculations straight away . Case prompts can be tricky and easy to misunderstand, especially when you are under pressure. Rather, ask any questions you need to fully understand the case question and then validate that understanding with the interviewer before you kick off any analysis. Better to eliminate mistakes now than experience that sinking feeling of realising you have gotten the whole thing wrong halfway through your case!

This process is covered in our article on identifying the problem and in greater detail in our Case Academy lesson on that subject.

8.1.3. Analysis

Once you understand the problem, you should take a few seconds to set your thoughts in order and draw up an initial structure for how you want to proceed. You might benefit from utilising one or more of our building blocks here to make a strong start. Present this to your interviewer and get their approval before you get into the nuts and bolts of analysis.

We cover the mechanics of how to structure your problem and lead the analysis in our articles here and here and more thoroughly in the MCC Case Academy . What it is important to convey here, though, is that your case interview is supposed to be a conversation rather than a written exam . Your interviewer takes a role closer to a co-worker than an invigilator and you should be conversing with them throughout.

Indeed, how you communicate with your interviewer and explain your rationale is a crucial element of how you will be assessed. Case questions in general, are not posed to see if you can produce the correct answer, but rather to see how you think . Your interviewer wants to see you approach the case in a structured, rational fashion. The only way they are going to know your thought processes, though, is if you tell them!

To demonstrate this point, here is another excellent video from Bain, where candidates are compared.

Note that multiple different answers to each question are considered acceptable and that Bain is primarily concerned with the thought processes of the candidate’s exhibit .

Another reason why communication is absolutely essential to case interview success is the simple reason that you will not have all the facts you need to complete your analysis at the outset. Rather, you will usually have to ask the interviewer for additional data throughout the case to allow you to proceed .

NB: Don't be let down by your math!

Your ability to quickly and accurately interpret these charts and other figures under pressure is one of the skills that is being assessed. You will also need to make any calculations with the same speed and accuracy (without a calculator!). As such, be sure that you are up to speed on your consulting math .

8.1.4. Recommendation

Finally, you will be asked to present a recommendation. This should be delivered in a brief, top-down "elevator pitch" format , as if you are speaking to a time-pressured CEO. Again here, how you communicate will be just as important as the details of what you say, and you should aim to speak clearly and with confidence.

For more detail on how to give the perfect recommendation, take a look at our articles on the Pyramid Principle and providing recommendations , as well the relevant lesson within MCC Academy .

8.1.5. Wrapping up

After your case is complete, there might be a few more fit questions - including a chance for you to ask some questions of the interviewer . This is your opportunity to make a good parting impression.

We deal with the details in our fit interview resources. However, it is always worth bearing in mind just how many candidates your interviewers are going to see giving similar answers to the same questions in the same office. A pretty obvious pre-requisite to being considered for a job is that your interviewer remembers you in the first place. Whilst you shouldn't do something stupid just to be noticed, asking interesting parting questions is a good way to be remembered.

Now, with the interview wrapped up, it’s time to shake hands, thank the interviewer for their time and leave the room .

You might have other case interviews or tests that day or you might be heading home. Either way, if know that you did all you could to prepare, you can leave content in the knowledge that you have the best possible chance of receiving an email with a job offer. This is our mission at MCC - to provide all the resources you need to realise your full potential and land your dream consulting job!

8.2. Remote and one-way interview tips

Zoom case interviews and “one-way” automated fit interviews are becoming more common as selection processes are increasingly remote, with these new formats being accompanied by their own unique challenges.

Obviously you won’t have to worry about lobbies and shaking hands for a video interview. However, a lot remains the same. You still need to do the same prep in terms of getting good at case cracking and expressing your fit answers. The specific considerations around remote case interviews are, in effect, around making sure you come across as effectively as you would in person.

8.2.1. Connection

It sounds trivial, but a successful video case interview of any kind presupposes a functioning computer with a stable and sufficient internet connection.

Absolutely don’t forget to have your laptop plugged in, as your battery will definitely let you down mid-interview. Similarly, make sure any housemates or family know not to use the microwave, vacuum cleaner or anything else that makes wifi cut out (or makes a lot of noise, obviously)

If you have to connect on a platform you don’t use much (for example, if it’s on Teams and you’re used to Zoom), make sure you have the up to date version of the app in advance, rather than having to wait for an obligatory download and end up late to join. Whilst you’re at it, make sure you’re familiar with the controls etc. At the risk of being made fun of, don’t be afraid to have a practice call with a friend.

8.2.2. Dress

You might get guidance on a slightly more relaxed dress code for a Zoom interview. However, if in doubt, dress as you would for the real thing (see our article here ).

Either way, always remember that presentation is part of what you are being assessed on - the firm needs to know you can be presentable for clients. Taking this stuff seriously also shows respect for your interviewer and their time in interviewing you.

8.2.3. Lighting

An aspect of presentation that you have to devote some thought to for a Zoom case interview is your lighting.

Hopefully, you long ago nailed a lighting set-up during the Covid lockdowns. However, make sure to check your lighting in advance with your webcam - bearing in mind what time if day your case interview actually is. If your case interview is late afternoon, don’t just check in the morning. Make sure you aren’t going to be blinded from light coming in a window behind your screen, or that you end up with the weird shadow stripes from blinds all over your face.

Natural light is always best, but if there won’t be much of that during your interview, you’ll likely want to experiment with moving some lamps around.

8.2.4. Clarity

The actual stories you tell in an automated “one-way” fit interview will be the same as for a live equivalent. If anything, things should be easier, as you can rattle off a practised monologue without an interviewer interrupting you to ask for clarifications.

You can probably also assume that the algorithm assessing your performance is sufficiently capable that it will be observing you at much the same level as a human interviewer. However, it is probably still worth speaking as clearly as possible with these kinds of interviews and paying extra attention to your lighting to ensure that your face is clearly visible.

No doubt the AIs scoring these interviews are improving all the time, but you still want to make their job as easy as possible. Just think about the same things as you would with a live Zoom case interview, but more so.

9. How we can help

There are lots of great free resources on this site to get you started with preparation, from all our articles on case solving and consulting skills to our free case library and peer practice meeting board .

To step your preparation up a notch, though, our Case Academy course will give you everything you need to know to solve the most complex of cases - whether those are in live case interviews, with chatbots, written tests or any other format.

Whatever kind of case you end up facing, nothing will bring up your skillset faster than the kind of acute, actionable feedback you can get from a mock case interview a real, MBB consultant. Whilst it's possible to get by without this kind of coaching, it does tend to be the biggest single difference maker for successful candidates.

You can find out more on our coaching page:

Explore Coaching

Of course, for those looking for a truly comprehensive programme, with a 5+ year experienced MBB consultant overseeing their entire prep personally, from networking and applications right through to your offer, we have our mentoring programmes.

You can read more here:

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28 Case Interview Examples for Consulting Interview Prep (2024)

• Last Updated January, 2024

Rebecca Smith-Allen

Former McKinsey Engagement Manager

How to Use Case Interview Examples

Video Case Interview Example: Questions & Answers

Tips for Acing Your Case

Free Case Interview Examples (Consulting Firms)

Free Case Interview Examples (Consulting Clubs)

Practice is the key to passing your consulting interviews. To practice, you’ll need some examples of case interview questions and answers to work with.

We’ve got links to loads of them below.

In addition, we have:

• Tips on how to use case interview examples to prepare for your consulting interviews,
• A video case interview example with My Consulting Offer founder Davis Nguyen, and
• Insight into the difference between average and exceptional answers to case interview questions.

Get ready to dive deep into structuring your analysis of business problems, identifying the key issues, and recommending solutions!

Keep reading to find out how to use case interview examples to ace your case.

How to Use Case Interview Examples to Ace Your Case

1. start your case interview preparation early..

You’ll need to practice dozens of case interview examples to get good enough to receive an offer from one of the top consulting firms. This is not something you can cram the night before an interview.

Start as soon as possible.

2. Don’t Read Straight through Sample Case Interview Examples or Passively Watch Videos.

Some people think that the best way to improve their chances of passing a case interview is by reading as many cases interview examples as they can.

This is like reading about how to play tennis but never picking up a racket. To get better at tennis, for example, you need to actually pick up a ball and be active. The same applies to your interview preparation.

Stop and think at each step in the case interview question. Come up with your own answer and say it out loud. Practice driving each part of the case interview example yourself.

• How would you structure your analysis of the problem?
• What questions would you ask the interviewer?
• How would you set up the case math problem?
• What recommendation would you make to the client?

After you’ve developed your answer, compare it to the suggested answer for the case.

What did you get right?

How did your answer and the case interview example answer differ?

Are there things you miss consistently across multiple case interview examples?

The answers to these  case interview examples can look simple when you just read through them, but it’s not easy to come up with all the key aspects of the solution on your own.

Nail the case & fit interview with strategies from former MBB Interviewers that have helped 89.6% of our clients pass the case interview.

3. Find Partners to Practice Case Interviews with.

Teamwork is an important part of consulting work, so get ready for it now. Find a case interview practice partner, preferably someone else who’s applying to jobs in the management consulting industry because they’ll know more about what recruiters are looking for.

Practicing cases with a partner provides the opportunity to get feedback from someone else on what you’re doing well and what you need to improve. Additionally, you’ll learn a lot by watching how your partner solves sample case studies.

Look for aspects of their approach that are effective as well as what they could do better. Working with a partner will make your consulting interview practice feel more real.

Similar to how you need a tennis partner to feel what is like to play tennis, you need a case partner to experience what a case interview is like.

4. Master the 4 Parts of the Case Interview.

In our article on Case Interview Prep , we discussed the 4 parts of the case interview: the opening, structure, analysis, and conclusion. As you practice with consulting case interview examples, practice each of these 4 parts to ensure you’re strong at them all.

5. Avoid Case Burnout.

A case zombie is someone who’s grown tired of casing from doing too much of it. Their answers feel rehearsed, not conversational. 

They may seem bored, not engaged in solving the problem. They’ll be less creative in their solutions. They certainly won’t pass the airport test!

Avoid becoming a case zombie by practicing smarter, not harder.

Video: Case Interview Examples – Questions & Answers

In the following case interview example, Davis Nguyen, founder of My Consulting Offer solves McKinsey’s SuperSoda case.  The video is broken into 4 parts of the case interview.

Remember, don’t just watch the video. Stop the video and provide your own answer before listening to Davis’s  answer to the case question.

Step 1: Case Interview Example Opening – Ensure you understand the client and the problem you’ll be solving in the case.

Step 2: case interview example structure – break the problem down into smaller parts. make sure you cover all key case issues., step 3: case interview example analysis – ask questions, gathering information from graphs and charts provided by the interviewer, do case math, and provide insight into the client’s business problem based on what you learn., step 4: case interview example recommendation – develop a rational recommendation for the client based on all you’ve learned throughout the case interview., tips for acing your consulting case interviews – the difference between average & exceptional, case interview opening.

The opening is a great point to ask “dumb” questions because, at this point, you’re not expected to know much about the client and their business. 

Here your goal is to understand the client, their business, and what a successful project will look like.

Don’t shy away from asking for clarification on things that will help you better understand the business problem and solve it. For example, if you don’t know how life insurance works and the case is about life insurance, then ask.

After ensuring you understand the client and their problem, the next thing to ask about is key metrics of success. 

For example, the client may want to find new avenues for growth. Are they looking for a 5% increase in revenue or to double their business?

Finding out what success looks like in the client’s eyes will ensure you work to deliver a solution that meets their expectations, not one that’s underwhelming.

After you find out what success looks like, ask further probing questions to better understand the client, their business, and any constraints on solving the case.

Examples of Relevant Questions to ask Your Interviewer 

Examples of relevant questions about the client might include the geography they operate in or the sector of their industry they are strongest in. 

Examples of relevant questions about their business might include what products or services are most profitable or most important to their customers. 

Examples of relevant questions about the problem might include whether there are any costs that can’t be cut or what the maximum amount the client is able to invest in developing a new product. 

Asking these types of questions up front will give you a better context for solving the client’s problem and make it more likely that you will solve the case interview.

Case Interview Structure

You’ll need a framework to make sure your analysis covers all key aspects of the consulting case. 

You can use one of the many standard Case Interview Frameworks we’ve outlined , but top interviewees develop their own framework for analyzing the case interview question. 

Their frameworks may include pieces of one or more of the standard frameworks but are tailored to the particular business problem they’re discussing. 

Good frameworks are hypothesis-driven, that is to say they can be tested similar to the science experiment, so that the answer is either a “yes” or “no.” For example, examining your bank account to see, “if I have $400 for a ticket” is an example.

Second, good frameworks cover all topics relevant to the answer. For example, if the client is opening up a new hotel in a foreign country, checking out the existing competition should be part of the framework.

As you study more about interactive case interviews and practice them you’ll develop a sense for what factors are relevant or not relevant to the case at hand.

Finally, a good structure will be  MECE  or mutually exclusive and collectively exhaustive.

This means the framework will break down the market or population being analyzed into segments that include every part of the whole (collectively exhaustive), and each segment of the market or member of the population will show up in one and only one category without overlap (mutually exclusive). 

For example, if you divide the target market for a retail product into segments by age, these segments would be MECE:

•  10-19,
• 40-49, etc.

The categories 15-25, 20-30, 27-35 would not be MECE because people could be counted twice. 

Case Interview Analysis

In the analysis phase of your case interview example, you’ll ask questions to get the information you need to solve the client’s business problem. Your questions will likely lead you to one of the 4 types of analysis that are common in consulting interviews: market sizing, brainstorming, quantitative reasoning (case math), or reading exhibits. 

No matter which of these types of analysis comes up, there’s a 4-step method that ensures you can crack the case. 

This 4-step method is:

• Ask for data,
•  Interpret the data,
•  Provide insight, and 
• Outline next steps. 

The data you ask for will depend on the case interview question you’re solving. For example, if the question is about profitability, you’ll need to know about the client’s finances: dig into revenues and costs. 

For example, if you find that the client’s revenues are flat while their costs have been rising, you’ll know that the problem is in the cost structure and that you’ll need to examine costs more closely.

Next, provide insight. As you examine costs further, you’ll find out why they’ve grown faster than revenues. 

This insight will naturally lead to the next steps. What does the client need to do to get costs under control and fix their profitability problem? 

You may need to go through this 4-step method a couple of times, focusing on different aspects of the client’s business problem. 

Once you’ve examined and developed insight into all key aspects of the problem, your next step will be to conclude the interview with a recommendation for the client.

Case Interview Conclusion

At this point, you’ve hopefully cracked the case and are ready to present your recommendations to the client (your interviewer). 

The best way to do this is to use the 5R approach:

• Recap – restate the business problem you’ve analyzed. In consulting this is done because a CEO might have hired 5 McKinsey teams and can’t remember which one you are on. 
• Recommendations – Provide the solution your analysis led to. We lead with the recommendation because it is the most important piece of information. Stating it first and clearly puts everyone on the same page.
• Reasons – Summarize the key facts and insights that lead you to your recommendations. 
• Risks – Outline any risks the client should be aware of as they implement your recommendations. No recommendation has a 100% probability of success. Clients need to be aware of business risks in the same way patients need to understand the side effects of drugs.
• Retaining the client – Provide next steps for how you can help the client ensure success. As consultants, we are paid for helping our clients. If there is a natural extension of the work as the client implements the team’s recommendations, we should tell them how we can provide further assistance (and ultimately make money for your firm). 

While most candidates will address their recommendations and possibly the reasons for their recommendations, few will hit all these points. 

In particular, outlining risks and further ways you can help the client will differentiate you from other candidates and help you to advance  to the second round of interviews or get the offer.

Free Online Case Interview Examples from 7 Top Consulting Firms

Now that you’re familiar with how you should use case interview examples and what differentiates an average answer from an exceptional one, you need sample questions to practice with.

Below, we provide links to dozens to help you hone your business problem-solving skills.

1. McKinsey Case Interview Examples

Disconsa – Help a not-for-profit develop better financial-service offerings for remote Mexican communities.

Electro-Light – Help a beverage manufacturer prepare for a new product launch.

GlobalPharm – Help a pharmaceutical industry client manage with its merger and acquisitions strategy.

Transforming a National Education System – Help a country’s education ministry develop a new strategy for educating the country’s children. 

2. BCG Case Interview Examples

Climate Challenge – Help a global consumer goods company reduce its environmental impact.

Driving Revenue Growth at a Healthcare Company – Help a medical devices and services company to increase revenues following an acquisition. (The same one that is highlighted above in our example)

3. Bain Case Interview Examples

Coffee Shop Co. – Help a friend decide whether they should open a coffee shop.

F ashionCo. – Help a fashion company understand why its revenues have been going down.

Private Equitas – Help a private equity company maximize its investment in a portfolio company.

4. Deloitte Case Interview Examples

Footloose  – Help a footwear company improve their market share in the boots category.

Recreation Unlimited – Help a global apparel and sportswear company improve its digital customer experience and its revenue.

Agency V – Help a large federal agency recover from a front-page scandal that sparked investigations and congressional hearings.

Federal Benefits Provider – Help a federal agency that provides benefits to millions of U.S. citizens prepare for a major expansion of its mandate.

5. AT Kearney Case Interview Examples

Promotion Planning – Help a national grocery and drug store chain improve its product promotion strategy.

6. PWC Case Interview Examples

Modernizing a Hotel’s Loyalty Platform – Help simplify and modernize the platform, providing customers with immediate access to their data.

Green Energy – Help an energy company transition to net zero greenhouse gas emissions.

Nonprofit Impact – Help a community organization respond to client needs during the pandemic.

Love at First Byte – Help a data management client comply with new regulations.

Prioritizing Ethics and Integrity – Help a software company leverage data analytics to comply with regulations.

7. Accenture Case Interview Examples

Sustainability – Help drive sustainability for an auto manufacturer.

IT integration strategy – Driving merger integration by linking technology systems.

We have more on how to Accenture Case Interviews in our article.

8. Capital One Case Interview Examples

Ice Cream Corporation – Help the president of Ice Cream Corporation grow profits.

9. Oliver Wyman Case Interview Examples

Wumbleworld – Help a China-based theme park operator identify the reasons for declining profits and develop options for reversing the trend.

Aqualine – Help a manufacturer of small power boats determine why its sales growth has slowed and identify opportunities to boost sales.

10. LEK Case Interview Examples

Theater chain – Help a large theater chain identify revenue growth opportunities.

Free Online Case Interview Examples from Consulting Clubs

Need more case interview examples? Here are links to MBA case books compiled by INSEAD, Harvard, Wharton, Darden, and several other business schools.

Recent Consulting Case Interview Examples

• Darden School Of Business 2021-2022 Casebook
• NYU Stern MCA 2020-2021 Casebook
• The Duke MBA Consulting Club Casebook 2021-2022
• Notre Dame Casebook 2022
• Kellogg Consulting Club 2020 Casebook
• FMS Consulting Casebook 2021-22
• INSEAD Consulting Club Casebook 2021
• IIMC Consulting Casebook 2021-22
• UCLA Case Book 2019 – 2020
• Columbia Business School 2021 Casebook
• IIM Lucknow Casebook 2022
• Cornell MBA Johnson Consulting Club Casebook 2020-2021
• Darden School Of Business 2020-2021 Casebook

Older Consulting Case Interview Examples

• 2019 Berkeley Haas School of Business Consulting Club Interview Preparation Guide and Case Interview Examples
• The Duke MBA Consulting Club Casebook 2018-2019
• 2017-2018 McCombs University of Texas at Austin Consulting Case Interview Examples
• Columbia Business School Management Consulting Association Case Interview Examples 2017
• Duke Fuqua School of Business MBA Consulting Case Interview Examples 2016-2017
• NYU Stern MBA MCA Case Interview Examples: 2017
• UCLA Anderson School of Management Consulting Association Case Interview Examples 2015-2015
• Darden Consulting Club Case Interview Examples: 2014-2015
• Yale Life Sciences Consulting Case Interview Examples 2014
• ESADE MBA Consulting Club Case Interview Examples 2014
• Darden Consulting Case Interview Examples: 2012-2013 Edition
• Kellogg Consulting Club Case Interview Examples and Interview Guide: 2012 Edition

Even More Consulting Case Interview Examples

• The Cornell Consulting Club Interview Interview Examples
• Harvard Business School Management Consulting Club Case Interview Examples
• The MIT Sloan School of Management Consulting Club Case Interview Examples and Interview Guide – October 2001
• The Berkeley MBA Haas Consulting Club 2006 Case Interview Examples
• London Business School – The 2006 Consulting Club Case Interview Examples 
• Columbia Business School Management Consulting Association Case Interview Examples – 2006
• Torch the Case – The NYU Stern Consulting Case Interview Examples – 2007 edition 
• Michigan – the Ross School of Business Consulting Club 2010 Case Interview Examples
• Wharton Case Interview Examples by the Wharton Consulting Club – December 2010
• The Duke MBA Consulting Club Case Interview Examples – 2010-2011
• Case Interview Examples by the ESADE MBA Consulting Club 2011  
• INSEAD Consulting Club Handbook and Case Interview Examples – 2011

Still have questions?

If you still have questions on case interview examples, leave them in the comments below. We’ll ask our My Consulting Offer coaches and get back to you with answers.

We have tons of other articles to help you get an offer from one of the top consulting firms. Check out our pages on:

• Case Interview Math
• Case Interview Types
• Case Interview Formulas
• Market Sizing Questions

Help with Case Study Interview Preparation

Thanks for turning to My Consulting Offer for advice on case study interview prep. My Consulting Offer has helped almost 89.6% of the people we’ve worked with get a job with top management consulting like Bain, BCG and McKinsey .  For example, here is how Conor was able to get his BCG offer after previously failing.

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3 Top Strategies to Master the Case Interview in Under a Week

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What Is a Case Study?

What is a case study interview, how to prep for a case study interview, case study interview example questions, during the case study interview.

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Table of Contents

A case study interview isn’t your average interview. While most interviews ask you to give examples of how you use your skills on the job, in a case study interview, you’ll use those skills in front of the interviewer to solve a real-life problem.

It’s like auditioning for the school play. But instead of showing you can sing and dance, you’re using a case interview to show how you provide innovative solutions to pressing business problems. Not sure how to get ready for this kind of interview? We’ve got you covered. This guide explains how to prep for a case study interview.

Case studies are used across a variety of industries — everything from business to medicine. They are an in-depth examination, analysis, and critique of a real-world scenario the company experienced. People discuss the situation and explore what they learned while forming new solutions to try when they face a similar situation in the future and hope to improve their performance.

For example, doctors and nurses use case studies to improve how they diagnose and treat patients. Using real patient information, the medical team analyzes the case to see what the team may have missed and why they missed it. Learning from these errors helps the team better prepare for similar cases in the future to improve patient care.

While many industries use case studies to iterate and improve their performance, not every company uses case study interviews. This type of interview is very common at consulting companies (no matter what kind of consulting it is). But it’s not unusual for companies outside of consulting to use case interviews for marketing or operations roles.

In a case study interview, you’re given a real-world situation the company has faced and are tasked with analyzing it and suggesting a course of action.

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Skills you’ll build: Prioritizing, planning, data analysis, error spotting, communication, strategic thinking

Businesses use case study interviews to assess your abilities in real-time. While you’ll probably draw on a variety of skills, most case study interviews assess:

• Strategic thinking
• Analytical skills
• Common sense

The advantage of a case study interview is that the interviewer can evaluate your ability in each of these areas and see how you’ll actually use them on the job.

What Is a Fit Interview?

Some people use “case study interview” and “fit interview” interchangeably. While a fit interview and a case study interview both ask behavioral interview questions , they are not the same thing.

A case study interview assesses your ability to do the job. It primarily evaluates how you approach business problems and use your skills to solve them. A fit interview is about company culture fit. The interviewer asks questions that assess how well you’ll fit into the company, like asking you questions about what motivates you or how you lead .

Fit and case interviews are important parts of the evaluation process. Getting the job done is just as critical as getting along with coworkers and supporting the company’s mission. Depending on where you interview, you may have one fit interview and one case study interview, or the fit interview may be a smaller part of the case study interview.

What You’ll Learn in a Case Study Interview

A case study interview allows the hiring manager to see your skills in action and how you approach business challenges. But it also teaches you a lot about the company (even if you’re doing most of the talking).

In a sense, you’re behaving as an employee during a case study interview. This gives you a peek behind the curtain, allowing you to see the company’s inner workings, like how they approach business problems and what they expect from you and your performance.

For example, you may offer a novel approach to solving a problem during a case interview. How does the interviewer react to it? Are they impressed? Surprised? Is there a scowl or frown on their face? Their reaction gives you insights into how the company will likely receive your solutions.

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Depending on the specific company, you may have the case study interview questions in advance, but you may not. Whether you do or don’t, here’s how to prepare for a case study interview.

Conduct Deep Research

Good interview prep for any interview means researching the company. That includes things like learning more about the company’s mission and the challenges the industry faces. But when you’re preparing for a case study interview, your research needs to go deeper. 

When you answer a case study question, your answer has to be specific to the company’s clients or business objectives. For example, if you’re interviewing for a role in strategy consulting , your answer shouldn’t focus on aspects of human resources consulting (unless it’s particularly relevant).

Your research needs to include the kinds of clients the company works with and what types of problems the company solves. For example, the company may only consult for Fortune 100 companies that need accounting advice. Keep these facts in mind as you prepare for the interview.

Case Study Interview Formats

There are four types of case study interview formats:

• Candidate-led: The interviewer asks you a specific question (or gives you a prompt), and you walk the interviewer through a detailed answer.
• Employer-led: The interviewer leads you through a series of specific (and predetermined) prompts and questions, no matter your answers.
• Presentation: You’re given a problem in advance to create and present a detailed case study.
• Video: Similar to a presentation case study interview, you’ll create a video presentation of the case study.

Most companies will tell you in advance which style of case study interview you should prepare for. But if they don’t, reach out to your recruiter or check the company’s website. Many include the essential details you need to prepare for the case study interview.

Seek Out Company-Specific Tips

Speaking of companies and their websites, not only do many companies that use case study interviews tell you the format, they often include helpful tips and tricks to help candidates prepare. This includes what to expect, what the company is looking for skill-wise, and what kinds of responses they want. They may even have a few practice questions and videos you can use to help you prep.

Unlike other common interview questions , it’s not as easy to prepare an answer to case study interview questions. Even though you know it’s a case study interview, you don’t necessarily know the specifics of the case or what problems you’ll be asked to solve.

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That said, it’s likely your case study interview questions will cover one or several of these concepts:

• Entering new markets
• Increasing profits
• Cutting costs
• Turnarounds
• Mergers and acquisitions
• Pricing strategy
• Developing new products
• Industry analysis
• Competitive response

While there are many ways to answer case study interview questions, a few basic prep tips can help you get ready for every question.

In addition to what you usually bring to a job interview , make sure you bring a notepad and pen or pencil to a case study interview. Taking notes will help you better understand the questions and formulate your answers. It also gives you a place to calculate numbers and figures if you need to. Not every case study interview allows calculators, so you’ll need to be ready to do your calculations manually.

Ask Specific Questions

As you’re working through the case study, you can and should ask any clarifying questions you need. The interviewer wants to hear specific, detailed answers that solve the problem. So, whenever you’re unclear, ask a follow-up question to not only get what you need but to give the interviewer what they need. 

That said, your question(s) should be very specific. You need to verify exactly what the interview is asking so you can create an appropriate answer. Say the interviewer gives you a broad question: The client’s revenue is falling. How do you help them increase it? You can follow up with a very specific question or two to make sure you understand what the interviewer is asking:

You’re asking how I would help the client raise revenue, correct? Are you also asking how I would help them increase their profit and cut costs?

>>Related: 5 Top Questions to Ask in an Interview (and Why You Should Ask Them)

Talk Them Through It

A big part of the case study interview is seeing you in action. However, in this case, “see” really means “how you think.” Since the interviewer can’t hear your inner monologue, you’ll need to practice thinking out loud.

While the interviewer wants to hear your solution, they also want to hear how you got there. That means talking through your entire thought process. Instead of saying, “I’d do X,” you have to explain how you arrived at your decision while you’re getting there.

Because not everyone thinks out loud, it may feel unnatural to you, and you likely won’t be expected to do it on the job. But it’s crucial to practice this skill — and it is a skill — because the interviewer is expecting you to do it in a case study interview.

Want to give a case study a shot? Try out a Forage consulting virtual simulation program and gain the skills you’ll need to ace a case study interview.

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These case studies represent cases across firm styles (McKinsey, Bain, BCG, Deloitte, & more), including interviewer-led and interviewee-led (candidate-led) cases. The video examples demonstrate the nuances of the virtual case interview and include feedback from an MBB coach. The sessions feature consultants or consulting candidates.

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• May 13, 2020

A Quick Guide to Preparing for a Case Study Interview

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Reviewed by Chris Leitch

Invited to participate in a case study interview but not sure about the best ways to get ready for it?

As you always want to be at your very best when interviewing with a company, the case study interview requires a bit more preparation than recognising some of the common types of job interviews .

While you’ll still need to impress a prospective employer with strong research, confident interview responses and a professional appearance , the case study interview tests your knowledge and abilities through a spontaneous, analytical exercise. It examines how you approach problem-solving with the pressure of handling a situation without previous knowledge of any details or context.

Although the consulting industry utilises it as an essential part of the hiring process, the case study interview can be also found in many other environments, including startups, government and corporate organisations. It measures a candidate’s analytical, logic reasoning and communication abilities while under pressure.

In this guide, we will cover what you need to know to successfully prepare for a case study interview.

Case Study Interviews Explained

Even if you’ve never participated in one, it’s likely you’ve heard stories about the case study interview format. The case study puts you, the candidate, on the spot to solve a business problem posed by the interviewers.

Case study interview questions cover a wide range of topics and do not look for a single ‘right’ answer. Instead, the format gives the interviewers a look at how you respond spontaneously while applying problem-solving skills to create a solution to the business challenge presented.

For example, an exercise might ask what the potential market size is for a vegan food company within a prospective city and if setting up shop within the region would be worth it. The case study may not share all the details to help you reach an answer, but it should prompt you to ask questions that help you structure your thought process.

What to Expect in a Case Study Interview

The ways by which a case study interview is conducted will vary by company. However, this format bears unique characteristics:

• You’ll receive an introduction to the business problem, its relevant details and other information that lend to setting context. Some companies may choose to share a briefing document for you to read, while others may prefer to communicate the scenario in conversation.
• Information about the business problem will be, to some degree, vague. While the problem may cover complex business concepts, expect that the information will provide a high-level description of the scenario – not detailed reports with specific facts and figures. Case study interviews present such information in general terms for a reason. They’re meant to provide just enough information so that you can choose how to approach your line of questioning to solve the problem.
• The discussion about the business problem will be led by either the interviewer or the candidate. You need to be prepared for both situations. Who leads the conversation about the business problem is important, as it reveals the direction the discussion will take.

In interviewer-led sessions, the interviewer seeks to gauge the quality of your approach as it relates to a specific part of the business problem. They control the dialogue, focusing on a series of tough questions unlike those considered to be difficult in other interview formats . The interviewer sticks to a line of questioning that refers to details and themes relevant to the business problem, and evaluates how you comprehend, interpret and recommend actions within this specific domain.

On the hand, candidate-led conversations evaluate your ability to understand a business problem comprehensively, and from multiple points of view. Consultants play different roles on projects. Their actions cover various levels of activity, from analysing the business facts and data, creating the solutions and communicating directly with the clients on the overall strategy and approach. You’ll need to show strong methodology to guide others in your process.

Candidate-led sessions are challenging because they give you the freedom to explain your best approach to tackle the entire problem, but without receiving the input or comments of others to help guide a conversation along.

How to Prepare for a Case Study Interview

As you might find these interviews to be difficult, intense and downright nerve-wracking , you can succeed in a case study interview through thoughtful preparation. Here are five tips to help you ace the interview:

1. Demonstrate Your Analytical, Reasoning and Communication Skills

While recapping key details of the business problem is important, the case study interview measures much more than your ability to recall the facts. It showcases how you think on your feet as you seek out information to determine your course of action.

While you might be comfortable sketching out a framework or a mathematical formula that helps you identify the way you wish to solve the problem, this interview format also tests your ability to explain the reasoning in a clear and believable manner to others.

To be successful in a case study interview, you must demonstrate the skill to process information quantitatively, as well as speak about your rationale and decisions convincingly.

2. Get Ready to Play an Active Role in the Discussion

Case study interviews require a high level of engagement. While other interviews might have you responding to questions with rehearsed answers, the case study interview presents a situation that is dynamic and unpredictable.

You’ll want to approach the session with an active disposition. This typically includes taking notes, documenting your observations and ideas, sketching out diagrams and charts, and asking follow-up questions throughout the interview .

3. Identify the Type of Problem Posed to You

Jobseekers may find that there are common themes that appear when covering the type of business problems found in case study interviews. Eight of the most common exercises explore these questions:

• Maths – eg: ‘How many more units do we need to sell to double the profit?’
• Market size – eg: ‘How big is the market size within the US for smart wearable devices?’
• Framework/Issue tree - eg: ‘Identify the factors you would consider in addressing the problem.’
• Data-chart insights – eg: ‘What story do the numbers tell about the operations of this business?’
• Value proposition – eg: ‘What factors do customers look for in choosing a mobile phone carrier?’
• Business valuation – eg: ‘Just how much is this company worth today, and would it change if acquired by our competitor?’
• Hypothesis – eg: ‘What are some possible reasons that explain this trend?’
• Brain teaser – eg: ‘How many tennis balls can you fit in an area that is twice the size of a football field?’

There is not a single approach that solves all business problems. By identifying the type of problem you’re encountering, you’ll be able to quickly determine the most appropriate method to apply.

For example, you might discover that a maths problem will rely on the knowledge of specific formulas and expressions, while a hypothesis question calls for a closer look at the root causes behind an issue.

4. Organise a Framework that Helps You Solve the Problem

Having a good framework to apply to a problem is the key to doing well in a case study interview. You want to show that you understand a business issue well enough to formulate recommendations or insights that address the problem. As there isn’t one right answer to such a problem, your interviewer will be interested to hear about the thought process you applied to arrive at your decisions.

The process may involve a range of problem-solving skills and methods, including the use of mathematical formulas, first-hand knowledge about an industry and decision-tree flowcharts that guide through questions you’ve applied to the issue.

It’s helpful to write down your framework and refer to it as needed. By having the steps outlined, you’ll be able to explain your recommendations in a clear and confident manner so that the rationale used in your analysis appears sound.

5. Practise, Practise, Practise!

Prepare for the case study interview by engaging in mock practice sessions before the big day. While it’s important to spend time putting together the methods you’ll use to analyse a business problem, enlisting the help of a friend or two familiar with this interview format is essential.

You’ll want to find case study examples online and share your selections with those helping you practise. Your friends should read the materials before the practice sessions and play the role of the interviewer.

By conducting a practice session as if it were the real thing, your friends will help you work through the awkwardness and spontaneity of the case study interview and develop the confidence to perform successfully.

By following these tips, you’ll be ready to show off your analytical, communication and problem-solving skills, all important to the case study interview. However, don’t limit your preparation only to the guidance given for this specific style; rather, you’ll want to make sure you continue the things that served you well for other interview formats, including making a good first impression and avoiding interview faux pas .

By combining those behaviours with the preparation, mindset and practice needed to solve business problems on your feet, you’ll put yourself in a great position to succeed at a case study interview.

Have you ever found yourself in a case study interview? What advice do you have to give? Let us know in the comments section below!

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What are the most common case study interview questions at McKinsey, BCG and Bain?

If you’re preparing to interview at a top management consulting firm like McKinsey, BCG or Bain (MBB), you might be wondering what kind of questions you can expect to receive in your case interviews .

In this article we take a look at the most common types of case questions asked by interviewers at the world’s top-3 consulting firms. We also consider how you can develop the skill of structuring answers to case questions.

The 10 most common case interview questions

To identify the most common case interview questions posed by interviewers at McKinsey, BCG and Bain, we surveyed CaseCoach users who interviewed at one of the firms for a generalist role in 2023. We found that 90% of the 260+ case interviews reported by respondents fell into one of 10 question types:

The respondents in our study all interviewed for generalist consulting positions at McKinsey, BCG and Bain. It’s no coincidence that the case interview questions that they were asked align to the typical challenges and opportunities faced by CEOs.

However, it’s important to bear in mind that this is not an exhaustive list. If you’re interviewing for a practice-focused role on the firms’ expert career track you may be given cases that focus on your area of specialization, rather than the topics in our list.

Your target firm and location may also have a bearing on the type of cases you are given. This is because MBB offices tend to use the work they have done for clients to develop their case questions for candidates.

Knowing the frameworks that correspond to these questions is critical

As a management consulting candidate, it’s vital that you have an understanding of the issues behind the most common case questions and know the frameworks for tackling them inside out.

In our Interview Prep Course, we provide detailed examples of how to structure these questions at the beginning of a case interview. We also explain how different circumstances should influence your approach.

You can learn more about structuring frameworks for specific types of cases in our articles on mastering profitability questions , answering revenue growth questions and nailing market sizing question s.

You can also find examples of the following types of cases in our Case Library :

• Profit improvement
• Market entry
• Mergers and acquisitions
• Response to a competitive threat

If you’re not a CaseCoach subscriber, you can gain access to these examples by signing up for a free account.

You must be able to create custom approaches to answering case study interview questions

When it comes to answering a case question effectively, applying a framework in a ‘cookie-cutter’ fashion simply won’t allow you to give the best possible answer or impress your interviewer with your structuring skills.

In fact, respondents in our survey reported that many of the cases they received could be assigned to several case types and could not be solved by applying an off-the-shelf framework. A profitability question may have a focus on market growth or launching a product, for example. To structure a response to this kind of question, candidates need to combine several frameworks and use them as building blocks for creating their answer.

Even common questions require a custom approach: a profitability question that relates to a chain of restaurants, for example, will naturally require a different approach to a question on the same topic in the manufacturing industry.

Interviewers want to understand how your mind works and to see you think on your feet. Increasingly, they are using non-traditional cases (such as those set in the public sector) to test this. Ten percent of the respondents in our survey couldn’t assign the questions they had faced to a particular case type, suggesting that they were given an unusual problem to solve.

As a candidate, you’ll need to demonstrate that you are capable of proposing a custom structure to any case question, rather than simply relying on a framework.

What does a good custom structure look like?

An effective structure should focus on the right question and then break it down into an exhaustive set of independent drivers. The structure should also provide an approach to solving the case and supply helpful insights. In other words, it should pass ‘the AIM test’:

• Answer-focused: a strong case structure will be focused on the right question and will provide an approach to solving the case.
• Insightful: the structure should be tailored to the specific situation posed by the case question and should provide helpful insights.
• MECE: this stands for ‘mutually exclusive and collectively exhaustive’. A good MECE structure will break the question down into an exhaustive set of independent drivers that neither overlap nor omit anything important.

You should use the AIM test as a guide for structuring your answers to case questions. If your structure meets all the criteria, it should provide a strong foundation upon which to solve the case. You can learn more in our article on case structuring and how to do it effectively .

Structuring skills take time and practice to develop

Building the muscle required to structure answers to a wide range of case questions, combine frameworks and develop your own approach to solving non-traditional cases takes a great deal of preparation.

First, you need to build an inventory of frameworks that you can use as building blocks to develop custom structures. You can do this by watching the structuring lectures in our Interview Prep Course , which covers topics such as the AIM test, business and academic frameworks, and using logical approaches to craft bespoke structures for unusual cases.

You then need to gain exposure to a variety of cases. You can choose from the 100+ questions in our Case Library and then schedule a practice session with a partner from our diverse community of top candidates in our Practice Room .

Structuring is one of the case interview skills you can practice alone in addition to practicing with a partner. Our Interview Prep Course includes 60+ structuring drills – which provide multiple solutions to each problem – to help you do this.

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9 Types of Questions in Actual Case Interviews

Case interviews at management consulting firms are among the most difficult job interviews, but they are also quite predictable. Once you know the types of questions they ask, preparation is straightforward.

Using years of experience at McKinsey, as well as field reports from thousands of candidates, I’ve crafted a list of 8 common case interview questions, and in this article, I’ll show you how to answer each of them.

Case interview questions – Overview

Types of case interview questions .

Most questions in case interviews belong to one of these 9 types:

1. Framework/issue tree questions 2. Market-sizing and guesstimate questions 3. Valuation questions 4. Brain teaser questions 5. Chart insight questions 6. Value proposition questions 7. Information questions 8. Math problems 9. Solution-finding questions

In this article, we’ll discuss how to answer each question, along with the necessary tips and tricks.

How to answer case interview questions

There are the fo ur basic steps to answer case interview questions:

• Step 1: Clarify any unclear points in the question
• Step 2: Announce approach and ask for time
• Step 3: Draw issue trees to solve the given problem
• Step 4: Pitch your answer and end with a takeaway conclusion.

This general outline may vary depending on each type and each question – for example, brain teasers or information questions need only the last step, while market-sizing and framework questions need all four steps to deliver the perfect answer.

Type 1 – Framework/Issue tree questions

These are on top of the list among popular case interview questions!

If the interviewer asks you to identify factors contributing to a problem or to break down an entity (such as the revenue of a business), he/she is telling you to draw an issue tree.

And to draw a spot-on issue tree, you need to master consulting problem-solving foundations , the MECE principle , and common consulting frameworks . You should check out our other articles on these topics before moving on, because mastering the issue tree is the key to acing every possible case interview.

You also need good business intuition to draw good issue trees, so that’s all the more reason to start reading every day.

Gastronomia – a gourmet restaurant chain has found the turnover rate among its highly-skilled chefs increasing dramatically for the last 3 years; this has led to a noticeable decline in food quality and increased training costs, among other negative effects.

Which factors would you consider when tackling this turnover problem?

Job: Factors from the job itself. Further divided into 3 sub-branches

• Compensations: are the salaries, bonuses, and benefits attractive enough?
• Difficulty: is the job too difficult?
• Nature: is the job too boring, too unengaging, too repetitive…?

Company: Factors from the work environment within the restaurant chain, surrounding the affected jobs. Further divided into 2 sub-branches

• Cultural environment: is the culture at Gastronomia compatible with the chefs?
• Physical environment: is the physical working environment at Gastronomia safe, comfortable, convenient…?

Competitors: Factors from outside the restaurant chain, related to competing job offers. Further divided into 2 sub-branches.

• Inside industry: are other restaurant chains competing with Gastronomia for skilled personnel?
• Outside industry: are there new career options or changes in existing alternatives that draw chefs away from restaurant chains like Gastronomia?

For detailed guides on issue trees, frameworks and their principles, see the articles on Issue Trees , Case Interview Frameworks, and MECE Principle

Type 2 – Market-sizing & guesstimate

These questions go along the lines of “How many trees are there in Central Park?” or “What’s the market size of pick-up trucks in the USA?”

The key to nailing market-sizing and guesstimate questions lies in not the closest results, but the most logical and structured approaches. In fact, the interviewer expects you to follow these four steps:

Step 1: Clarify: Make sure you and the interviewer are on the same page regarding every detail and terminology, so you won’t be answering the wrong question.

Step 2: Break down the problem: Break the item in the question (number of trees in Central Park, market size of pickup trucks) down into smaller, easy-to-estimate pieces.

Step 3: Solve each piece: Estimate each small piece one at a time; each estimation should be backed by facts, figures, or at least observations.

Step 4: Consolidate the pieces: Combine the previous estimations to arrive at a final result; be quick with the math, but don’t rush it if you aren’t confident.

Unless you come up with something about 10 times the reasonable estimate, don’t worry about being “wrong” – the interviewer is unlikely to have a “correct” number in mind, he/she just wants to see your structured mindset.

This question type is so common, we devote a whole article to it, and our Case Interview End-to-End Secrets Program have a separate package on these questions. Check out our comprehensive guide on Market-Sizing & Guesstimate Questions for more details!

Now, here’s a quick example for you to try and get used to this type:

How many smartphones are sold each year, globally?

• Smartphones are phones using exclusively touch-screens.
• “Sold” means sold to the end-consumers. 
• The market size is calculated at present.

Break down the problem:

The global smartphone market can be divided into three segments – developed countries, developing countries, and undeveloped countries.

In each segment, the annual unit sales of smartphones depend on four variables:

• The percentage of “phone-owning age” people among the population
• The percentage of smartphone owners within the “phone-owning age” group.
• The average, annual, per capita “consumption” of smartphones for those owners.

Solve each piece:

• The population is 1.5 billion in developed countries, 5.5 billion in developing countries, and 1 billion in undeveloped countries.
• 80% of the world population is in the “phone-owning age” (Global life expectancy is 70 and everyone older than 15 years counts towards the “phone-owning age” group)
• 100% of the phone-owning age in developed countries will own a smartphone; the figure in developing countries is 75%, while in undeveloped countries it’s 10%.
• The average smartphone user replaces their phone every 3 years – so they “consume” 0.33 phones each year.

=> Estimated global smartphone market: 1.53 billion units per year

=> Actual 2019 global smartphone sales:  1.37 billion units (error margin: 11.7%).

This market-sizing question is solved using a four-step process, which is explained in this article:  Market-Sizing & Guesstimate Questions

Type 3 – Valuation questions

Valuation questions are about estimating the monetary value of a business, and these are very popular in case interviews too!

Valuation questions are a blend of guesstimation/market-sizing, math, and business. They also require basic finance knowledge. There are three ways to estimate the value of a business:

• The NPV Method: take the net cash flow generated by the business, and discount it to the present to account for time value of money. Basically “this company is worth X dollars because it gives me Y dollars over Z years”. This approach works best when the cash flow from the business is positive and stable.
• The Market Method: take one index of the firm (which can be stocks or anything depending on the industry) and multiply it with an industry multiple (the value of one unit of the said index). In other words, “this company is worth AxB dollars because it has A traffic and each traffic is worth B dollars”. This approach works best when the market is transparent and data on similar firms are accessible – usually with major, established industries such as commercial airlines.

In real case interviews, you have to justify your approach then ask the interviewer to give you the necessary data.

Our client wants to sell his organic-food restaurant (called “Cato’s Cabbage Farm”) to retire. How much is his restaurant worth?

(Supposed the interviewer gives you the following data: his current income from the restaurant is $100,000 per year; two other restaurants in the neighborhood – one with 2 times more customers, and another about 0.75 times, have been sold at $1,800,000 and $1,000,000 respectively).

NPV Method: Cato’s Cabbage Farm value = $100,000 / 10% = $1,000,000

Market Method:

Assume the number of customers for Cato’s Cabbage Farm is 1 “customer unit”, then the two neighborhood restaurants get 2 and 0.75 “customer units”.

• Industry multiple: ($1,800,000+$1,000,000) / (2+0.75) = ~$1,018,182
• Cato’s Cabbage Farm value = $1,018,182 x 1 = $1,018,182

Type 4 – Brain teasers

Brain teasers are the least predictable case interview questions – but even these can be learned!

Brain teasers are riddles designed to test unconventional, creative, and logical thinking. A famous example of this is Accenture’s “How do you put a giraffe in a fridge?”.

Although not as popular as before, brain teasers might still appear in consulting interviews; therefore, you should spend some time to prepare.

Most brain teasers can be allocated into these seven types:

• Logical questions are pure logic riddles – there’s no trick, no illusion, no creativity.

In our Case Interview End-to-End Secrets Program , there are +200 brain teasers to help you prepare for these “unpredictable” questions. You can also read our article about Case Interview Brain Teasers for insights on all of these exciting brain teasers, as well as 30 example questions and answers!

How do you put a giraffe in a fridge?

Open the fridge, put the giraffe in, then close the fridge. The question never says how big the fridge or the giraffe is.

For the logic and approach behind each kind of brain teasers, see the article on Brain Teasers.

Type 5 – Chart insight questions

You can’t be a management consultant without mastering the use of charts – the complex, scary-looking real-world charts such as those included in our Case Interview End-to-End Secrets Program.

In management consulting and case interviews, most charts are one (or a combination) of these four basic types:

• Bar charts compare the values of several items at one point in time, or 1-2 items at several time intervals.
• Line charts illustrate time-series data, i.e trends in data over a continuous period.
• Pie charts illustrate proportions, i.e “parts of a whole” analyses.
• Scatter-plots use data points to visualize how two variables relate to each other.

To read these charts and answer chart-insights questions effectively, you must follow a structured, comprehensive process:

You can find a more detailed guide in the Charts section in our article about Consulting Math.

What can you draw from the following chart?

Trends in chart:

• Steady rise in the number of confirmed deaths to about 70-80 per million;
• Both changes started around March 10-11.
• These sudden rises can be explained by events occurring in early-March, and 2.
• If number of cases is kept low, the threat from COVID-19 will remain minimal, considering a mortality rate of only 2%.

Type 6 – Value proposition questions

No business or consulting candidate can succeed without understanding the customers!

Value-proposition questions are not only about correctly identifying customer preferences, but also about analyzing and delivering the answer in a structured fashion. The former relies heavily on business knowledge and intuition, but the latter can be trained methodically and quickly. Personally, I use a “double issue-tree” – essentially a table with customer segments on one axis and proposed values on the other:

For segmenting customers, you can use the following table. However, don’t over-rely on it, since there may be more relevant and insightful question-specific segmentations.

In some cases, clarification is also necessary – both to avoid “answering the wrong question” and to narrow down the range of customers/values you need to cover in the answer.

What will a customer consider when buying a Toyota sedan?

Clarification: A sedan must be branded “Toyota” to be a Toyota sedan – cars with other Toyota-owned brands such as Lexus or Ranz do not count in this question.

Situational Assessment:

Toyota sedans occupy the entry-level and mid-range price segments, so Toyota customers will be more price-conscious than, for example, Lexus customers.

They are also less likely to lean considerably towards one particular factor, so achieving a balance is extremely important.

Functionality factors:

• Comfort: Toyota sedans are mostly for everyday use, so customers should feel comfortable being inside the car.
• Utility: Toyota sedans are used for multiple purposes, so convenience for a wide range of uses is important.

Cost factors

• Purchase price: A car can be an expensive investment while Toyota’s low-to-mid-range customers are more price-conscious, so having a cheap/reasonable price is important.
• Fuel and maintenance: Maintenance and fuel costs over time are likewise inversely related to the decision to buy a Toyota sedan.

Physical factors

• Performance: Customers are usually drivers themselves, who often pay attention to the technical characteristics of the car (speed, acceleration, handling, etc.)
• Visual design: The car should possess the same level of visual appeal as other competitors in the same segment.
• Build quality: Parts of the car should be assembled in a reasonably good manner.

Emotional factors

• Branding: The car should come from a well-known, reputable brand
• Personal preferences: Some customers choose specific cars simply because they “like” the car.

Type 7 – Information questions

In any problem-solving process, information is one of the overarching concerns!

“Information questions” essentially ask if the piece of data you use is obtainable in the first place. In real consulting work, data is not always available – client team members may refuse to cooperate or there’s simply no data on the subject.

There are many kinds of information sources in case interviews/consulting works, but I’ll divide them into primary and secondary sources. Primary sources means you must do the research yourself (or pay someone else to do it for you), such as customer surveys or mystery shoppings. If someone already did that research, and you use their results, it’s called a secondary source – you can get these from the client , the consulting firm you work for, or third-parties such as market research firms or external industry experts.

You can find out more about these sources and how to cite them in real case interviews through this free Prospective Candidate Starter Pack, which contains a glossary of data sources in consulting.

Our Prospective Candidate Starter Pack has a sheet containing all the possible sources of information in case interviews and consulting projects, among numerous other free resources; you can download and use it to answer these questions, by subscribing to our newsletter at the end of this article.

How do you assess your target customer’s preferences for sports cars?

Primary sources: customer survey, customer interviews, Secondary sources: industry reports, client sales reports, third-party expert interview, client expert interview

Type 8 – Math problems

A lot of information in case interviews and consulting work comes in the quantitative form, so you won’t escape Math by joining the consulting industry!

When you have to do the math, perform back-of-the-envelope calculations in a structured fashion, and say out loud what you’re writing. For one thing, it’s safe; for another, you show that you’re careful, organized, and reliable – just like actual consultants.

We have a Math Practice Tool right here! Use it every day, and you’ll be a master of mental calculations in no time flat!

We have a dedicated article on Consulting Math, which you should definitely read.

Type 9 – Solution-finding questions

What’s the point of analyzing a problem, if not to solve it?!

When dealing with solution questions, keep these four points in mind:

• Firstly, in case interviews as well as real consulting projects, solutions must always solve every root cause of a problem, so remember to check if your solutions are relevant and comprehensive.
• Secondly, every solution must be actionable – if your solutions are too expensive, too time-consuming, etc. for the client, they’re useless.
• Thirdly, the interview expects a highly-structured answer; so segment your solutions based on their characteristics (long-term vs short-term is the easiest segmentation)

Last but not least, deliver at least two solutions, preferably three to five. Otherwise, you’ll appear uncreative and lazy to the interviewer’s eyes.

Nailing these questions relies on having excellent business intuition; our Case Interview End-to-End Program has a dedicated Business Intuition package, but you should also train a habit of reading consulting and business articles daily, to sharpen your business mind.

A restaurant that relies solely on on-premise dining found the loss of adjacent parking space (due to termination of contract) harming their revenue. How can they fix that?

The solutions for the restaurant’s parking space problem can be divided into two types:

• Short-term solutions: Find new parking space around the neighborhood, or renegotiate for old parking space (possibly at a higher price).
• Long-term solutions: Introduce takeaway items and off-premise dining.

Reminders on case interview questions

The questions are not clear-cut in candidate-led cases.

There are two extremes in consulting case interview format: interviewer-led (McKinsey) and candidate-led (BCG, Bain).

Interviewer-led cases, on one hand, consist of multiple, clear-cut questions in a larger business case context; the candidate navigates through these questions to arrive at the solutions.

Candidate-led cases, on the other hand, have one big problem, which the candidate must break down into small pieces to identify the root causes and deliver solutions.

This list, therefore, is much more relevant to the interviewer-led format; nonetheless, this guide is still quite beneficial for candidate-led cases, because when solving that big problem, you’ll have to tackle small issues similar to the 8 aforementioned question types.

Mastering the fundamentals is crucial to consistent performance

Although it’s good to study the case interview questions, it is no substitute for mastering the fundamental principles.

Learning the exercises without the basics is like building a house without a foundation. My poor neighbor’s house developed a huge crack right down the center because of its weak foundation, so make sure to build your case interview prep a strong one by knowing the basics first.

Once you’ve mastered the fundamentals, you’ll become much more flexible – this quality is getting increasingly important because case interviews are getting less predictable, and more realistic.

If you haven’t, I advise you to read these articles (especially the first 4) before practicing the question types:

• Case Interview 101
• Issue Tree – The Complete Guide
• MECE Principle
• Case Interview Frameworks
• McKinsey Case Interview – Interviewer-led Format
• BCG & Bain Case Interview – Candidate-led Format

Expect the unexpected

If you study those nine question types, rest assured that you’ve covered the majority of questions in case interviews.

However, these are not all the possible questions you might be given. In actual cases, there are always questions that cannot be categorized neatly. If you do not prepare for these questions, it’s easy to be thrown off-balance.

So, how do you prepare for “the unexpected”?

• Master the basics: Focus your efforts on the basics, once you’ve mastered them it’d be comfortable to move on to higher, more sophisticated levels.
• Business Intuition : You need business intuition for a business-related job, it’s simple as that. Nearly every case concerns business in one way or another – even public sector cases. This is why we also teach business intuition in our Case Interview E2E Secret Program.
• Have mock case interviews : Practice case interviews with ex-consultants will help you get a sense of what might happen or how you might be evaluated in actual cases. Highly experienced coaches from MConsultingPrep will review your performance, giving you the most valuable feedback and actionable tips & techniques.

Six types of charts in case interview are: Bar/Column chart, Line chart, Percentage chart, Mekko chart, Scatter plot chart, Waterfall chart.

A case interview is where candidates is asked to solve a business problem. They are used by consulting firms to evaluate problem-solving skill & soft skills

Case interview frameworks are methods for addressing and solving business cases.  A framework can be extensively customized or off-the-shelf for specific cases.

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Case Interview End-to-End Secrets Program

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BCG Case Interview Guide

The Boston Consulting Group , more commonly known as BCG, is a global strategy consulting firm with over $8bn in revenue and 21,000 employees worldwide. It is the second-largest consulting firm in the world by revenue and is part of the prestigious MBB group (McKinsey, Bain, BCG).

Every year BCG receives thousands of job applications from undergraduates, masters, and MBA students across the globe. Working at BCG is considered one of the most highly reputable graduate jobs in the market and therefore is incredibly competitive. The acceptance rate at BCG is well below 1% and being an exceptional student is rarely enough.  

The BCG case interview is the cornerstone of their application process and is a problem-based interview where candidates are required to solve a business problem with limited information.

• 1. What BCG is Looking for

With such an abundance of talent applying for jobs at BCG they are particular about the skills and personality traits they are looking for and they go beyond academic excellence. The type of work that BCG does on a daily basis for their clients requires a mix of quantitative ability, business acumen, and relationship building .

The traits they state they are looking for on their website are:

Problem-solving – The problems that BCG works with their clients on are complex and natural curiosity and problem-solving skills are critical.

Structured thinking – The complexity of problems means it is easy to get lost in insignificant details and so BCG is looking for structured thinkers that can take a pragmatic approach to the problem in order to ensure analysis is comprehensive. This is at the core of the BCG case interview .

Feedback incorporation – The culture of strategy consulting is one of high performance and so whilst consultants need to be confident they also need to have the humility required to take on feedback and change their opinion when the facts present the change.

Alternative thinking – The unique nature of the client problems that BCG consultants face means that often there is not a best practice approach to solving it that the team can take, therefore, alternative approaches are highly valued by BCG.

• 2. BCG Application Process

There are four steps to the BCG application process, resume and cover letter , online assessments , and first and then second-round interviews.

The first step of the BCG application process is the same as most other graduate jobs. Applications for BCG are straightforward and done online. They require a resume and a cover letter as well as some personal details. The cover letter needs to be unique to BCG and not a generic cover letter with the company name changed.

The online assessments consist of two different tests; the BCG potential test and the BCG Pymetrics game assessment . These are the filtering mechanisms that test candidates' quantitative skills and personality traits.

The first-round interviews are similar to those at Bain, are usually with a junior consultant (3-6 years experience), and are where you will first be tested with a case interview . You will typically have 2 interviews both starting with fit questions such as ‘ Why consulting? ’ or ‘Tell me about a time when…’ for the first 15 minutes and then followed by a 45-minute case interview .

The second-round interviews follow the same structure as the first-round interviews but are conducted by more senior members of the team , usually directors, and junior or senior partners. These consultants will be more rigorous in their assessment and provide a final hiring decision.

• 3. Types of Interviews

BCG use three types of interview across their network:  case interview, experience interview, and written case interview (also known as a structured case interview). The most common interview is the case interview but you need to be prepared for all three unless the recruiter states the type of interview you can expect.

• 3.1 Case Interview

BCG uses case interviews with the same weighting as other strategy consulting firms and typically a candidate will face four separate interviews before they receive a job offer . The case questions are based on real-life examples and the interviewers will have worked on the problem themselves, this allows them to provide context and data easily.

BCG is looking to test candidates’ ability to do the day-to-day work that will be required of them. On their website this covers:

Problem-solving

Alternative thinking

Structured analysis

Communication

Read our full guide on how to work through case interviews because these skills will be applicable for all case interviews.

• 3.2 Experience Interview

The experience interview is normally integrated into a case interview or written case interview with the first 15 minutes of a 60-minute interview devoted to the experience and fit questions. The questions are closely aligned to other job interview questions but strategy consultants will want to see a certain approach to answering them. The types of questions they will ask are:

• Why consulting?
• What is your greatest achievement and why?
• When have you led a team and how did you approach the role?
• What is a difficult decision you have made in the last year?
• What is an example of a time when you showed initiative and leadership?
• What do you most like to do in your free time?
• Why would you be a good fit for one of our project teams?

The key to these questions is to develop a structure that can be applied to all of them . By structuring your answer, you will show that even when discussing non-business-related topics you apply a considered approach to your answer.

• 3.3 Written (structured) Case Interview

The written case interview assesses the same attributes as the case interview and requires the same skills. However, instead of working through the case with the interviewer, you are given a large document pack (20-30 pages) that contains all the information required to answer the case. The information pack is dense and the time provided to read and digest it is small (c.10 minutes). This means that you are required to find the key pieces of information, interpret data quickly and structure a recommendation to present back to the interviewer under time pressure .

As with the case interview, there is no correct answer and the important part of your answer is the consideration of trade-offs for making decisions and comparing the possible strategic decisions the business in question can take . The interviewer will test your thinking and recommendations to see how robust your conclusions are and the steps you took to get there.

• 4. Case Interview

The consulting case interview is the cornerstone of every strategy consulting firm’s interview process due to the ability to replicate the problems and challenges of the work they do.

To score well in a BCG case interview, you must meet the criteria laid out above and you can do this following a structured approach to case interviews . The structure of a BCG case interview is as follows:

• Situation and problem
• Hypothesis validation
• Framework development
• Root cause analysis
• Mathematical calculation (sometimes)
• Creativity test (sometimes)
• Recommendation

At the start of the case, the interviewer will outline the context and the problem to be explored. An example might be:

“A high street retailer wants to cut costs by 30% in response to the Covid-19 pandemic, how would you approach this?”

You would then be expected to put forward an initial hypothesis on what the answer might be and explain your intention to prove or disprove it.

From there you will be expected to develop a framework to conduct your analysis and test it with the interviewer.

If your framework is MECE and you explore it correctly then you will find the root cause of the issue for the client (in this case where costs can be reduced) and begin calculations if relevant.

The creativity test is when the interviewer asks you for an alternative to your findings or recommendation e.g. “Okay, the client says they do not want to shut stores, how else can they reduce cost?” They may ask this more than once and it tests the candidates' ability to think of alternatives, even if their answer is appropriate.

Finally, you will be asked to provide a recommendation whereby you need to synthesize your findings and give a clear and concise proposal.

For more information on how to approach and solve case interviews, you can read our case interview guide.

• 5. Additional Tips

Case interviews are pressurized situations where your anxiety levels are heightened and you don’t have the safety net of notes or the internet to fall back on.

For in-person interviews, it is common that one of the questions will have a mathematical element or a market sizing question included . These require long maths calculations without a calculator. If you haven’t practiced long addition, multiplication, division, or subtraction recently then it is a good idea to do so. Being quick at maths shows your competent quantitative skills and reduces unnecessary pressure during the interview, increasing your overall performance.

We have published guidance and practice questions dedicated to case interview maths, that will give you an idea of what to expect.

As with maths, practicing case interviews is the best way to improve your performance. Through practice, you will begin to develop a robust approach that satisfies the structure and framework components of the case and you will recognize how to navigate the case successfully .

If you are applying to BCG then you are probably applying to other strategy consulting firms too, this practice will be relevant to all of the firms you apply to as they all use case interviews in their application process.

• Apply structure to everything

The key requirement of a candidate in a case interview is the application of structure, specifically with a MECE approach . As mentioned above, you can even apply structure to the FIT questions and it is recommended you do so.

An example answer to the question ‘walk me through your CV’ would be to segment your experience into 1) Experience relevant to consulting 2) Experience not relevant to consulting and then briefly cover the experience you have in each bucket. This shows you understand what consulting is and what is relevant and also a key skill of a consultant – structured thinking .

If you can demonstrate robust structured thinking in your interview, you will score highly.

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• Interview Q & A
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[2024] Common Linux System Administrator Interview Questions

Prepare for your next linux system administrator interview with this comprehensive list of common questions and answers. from basic commands to advanced system management, these questions cover everything you need to know to ace your interview and land your next sysadmin role..

1. What is the Linux file system hierarchy?

2. how do you check the available disk space on a linux system, 3. what are the different runlevels in linux.

• 0: Halt (shutdown)
• 1: Single-user mode
• 3: Multi-user mode without a graphical interface
• 5: Multi-user mode with a graphical interface

4. How do you manage services in Linux?

5. what is the purpose of the /etc/fstab file, 6. how do you manage user accounts in linux, 7. what is the difference between chmod and chown , 8. how do you monitor system performance in linux, 9. what are cron jobs, and how do you manage them, 10. how do you troubleshoot network issues on a linux system, 11. what is ssh, and how do you configure it, 12. how do you configure a firewall in linux, 13. what is the purpose of the sudo command, 14. how do you manage package installations in linux, 15. what are selinux and apparmor, 16. how do you create and manage logical volumes in linux, 17. what is the purpose of the /var/log directory, 18. how do you configure raid in linux, 19. what is the difference between hard and soft links in linux, 20. how do you secure a linux server.

• Regularly updating the system and applying security patches
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21. What is a kernel in Linux, and what is its role?

22. how do you check the current kernel version in linux, 23. what is a swap partition, and how is it used, 24. how do you configure a static ip address in linux, 25. what is the difference between soft and hard limits in linux, 26. how do you automate tasks using shell scripting in linux, 27. what is the purpose of the fstab file, and how do you edit it, 28. how do you manage process priorities in linux, 29. what is the purpose of the /proc directory, 30. how do you monitor disk usage in linux, 31. how do you configure nfs (network file system) in linux, 32. what is the purpose of the /etc/hosts file, 33. how do you check for open ports on a linux system, 34. what is the difference between kill and killall commands, 35. how do you secure ssh access on a linux server.

• Change the default SSH port from 22 to a non-standard port
• Disable root login by setting PermitRootLogin no in the /etc/ssh/sshd_config file
• Use SSH key-based authentication instead of password authentication
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• Restrict SSH access to specific IP addresses using firewall rules

36. What is a cron job, and how do you create one?

37. how do you configure and manage swap space in linux, 38. how do you handle system logs in linux, 39. what is the purpose of iptables in linux, 40. how do you perform a system update in linux, conclusion:.

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Ashwini Ghugarkar

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