Interview Math: Over 50 Problems and Solutions for Quant Case Interview Questions

If I had more confidence in my math, I don't think I wouldn't have made such dumb mistakes in my recent case interview. So, that's where this book comes in...if you have math issues. If you work through this book - it'll take some of the pressure off your math nerves so you can focus on the case question. My framework was great (thank you Victor Cheng and LOMS) - but I think I was overwhelmed by the prospect of all of this math, and that made the nerves worse...and I got lost. I had this book, among 2 others - but I only went through about 1/2 of it. I should have done more.I like how he has many pages of drills on many topics (e.g., break even, profit, customer value). And, I like how he makes them get harder as it goes along within each chapter. This is exactly the way to teach something. His explanations are great and clearly written out on the next page of each practice item...again - great.One thing I'd love to see changed in future versions is this: He provides a lot of equations, but it would be better if he organized them a bit - because many of these equations are conceptually linked. Unfortunately, they are just listed here in one big group (which can be intimidating and hard to remember). If I were teaching a course in case interview prep - I'd explain how you can get ROI and net income and break even from a similar set of numbers - so students could remember these things and how they all relate. In this book, there is just a list, so you'll have to do that on your own.I don't think any firms are doing estimation cases anymore, but you still may get a mini-estimation problem within a larger case at an MBB firm. So, he does have a chapter on those - and it is good mental exercise regardless. Speaking of that, I like his little "table of useful facts" - how many people in the USA, how many households, etc...

I had an upcoming interview with a top consulting firm, and I was very nervous about my ability to do the quant case studies. I knew that the case study for this particular consulting firm focuses on market sizing, so this book was perfect for that. The book gave just the right amount of detail (which is totally different than, let's say, case interview secrets by Victor Cheng), was extremely clear, and provided examples after examples to practice on. My confidence was built after reading through the book, and I was able to blast through my quant case study during the interview. Thank you, Lewis Lin!! Highly recommend.

Good cheat sheet to help you capture the formulas you need and good framework to do marketing estimations. However the practice part and exercise was very basic in level and way below the level of math I encountered in the firm’s I was interviewed for examples

I bought this book in preparation for a final round of case interviews. I learnt from previous interviews with the company that their cases are rather quant heavy - so I bought this as a supplement to 'case in point' just to get used to doing math problems in a case setting. This books have a clear structure and tons of practice, and after completing those extercises, I felt much more confident in my interviews:) Highly recommended!

I initially purchased this book to help structure my thinking but thought it was so helpful that I purchased additional copies for everyone that works for me (I lead a product development group within a fortune 10 company).

just average, not worth to buy one .

The book had tactics for memorizing numbers and basic arithmetic. It’s a lot of theory and little practice. It did not improve my math skills.Luckily, my job interview was more strategy and presentation focuses because this book did not help.

Perfect we use it as part of our interview process

As a quant, I've been very disappointed with this book. No probability, no Black-Scholes, but only brainteasers like 'why is a manhole circle' or of the same kind...

Good

good

Very basic easy questions

Good book for Interview Case-Studies with a detailed approach laid out for different types of problems such as guesstimates, break-even, lifetime value etc. asked in interviews.