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Formula Sheet for Oliver Wyman's Numerical Reasoning Test

formula numerical reasoning test Oliver Wyman Oliver Wyman numerical reasoning test
New answer on Apr 30, 2024
5 Answers
5.2 k Views
Anonymous A asked on Jun 21, 2018

Hi everyone!

As I am progressing in my prep for the Oliver Wyman Numerical Reasoning Test, I noticed that the questions often focus on geometry problems and other Maths topics that require formulas (probability etc).

Does anyone of you by any chance have a formula sheet or an overview with all the necessary formulas that cover all Maths topics I need to know for the test?

I'm scared that I'm missing something and would highly appreciate any help!

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Best answer
replied on Jun 21, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School


Basically, any entry-level GMAT book will contain all the formulas. Since for you it's more about the theory rather than questions, you don't even need to buy anything. You can just download any outdated GMAT book.


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Anonymous replied on Mar 09, 2020

You can also find a lot of forums online where people share past questions/answers. It was really helpful to help me prepare

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Content Creator
replied on Apr 30, 2024
#1 rated MBB & McKinsey Coach

You can find sample tests online. 

Don't worry too much about the formulas. 

For anyone else who is preparing for case interviews, I’ve put together this material that covers virtually all the formulas you need:



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Content Creator
replied on Jul 27, 2023
McKinsey | Awarded professor at Master in Management @ IE | MBA at MIT |+180 students coached | Integrated FIT Guide aut


Precisely for the high amount of questions (1) asked by my coachees and students and (2) present in this Q&A, I created the “Economic and Financial concepts for MBB interviews”, recently published in PrepLounge’s shop (

After +5 years of candidate coaching and university teaching, and after having seen hundreds of cases, I realized that the economic-related knowledge needed to master case interviews is not much, and not complex. However, you need to know where to focus! Hence, I created the guide that I wish I could have had, summarizing the most important economic and financial concepts needed to solve consulting cases, combining key concepts theorical reviews and a hands-on methodology with examples and ad-hoc practice cases.

It focuses on 4 core topics, divided in chapters (each of them ranked in scale of importance, to help you maximize your time in short preparations):

  • Economic concepts: Profitability equation, Break even, Valuation methods (economic, market and asset), Payback period, NPV and IRR, + 3 practice cases to put it all together in a practical way. 
  • Financial concepts: Balance sheet, Income statement/P&L and Performance ratios (based on sales and based on investment), +1 practice case
  • Market structure & pricing: Market types, Perfect competition markets (demand and supply), Willingness to pay, Pricing approaches, Market segmentation and Price elasticity of demand, +1 practice case
  • Marketing and Customer Acquisition: Sales funnel, Key marketing metrics (CAC and CLV) and Churn, +1 practice case

Feel free to PM me for disccount codes for the guide, and I hope it helps you rock your interviews! 

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Anonymous replied on Jul 31, 2020

Dear A,

You can find all the formulas you needed in GMAT preparation book (handbook)



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Vlad gave the best answer


McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
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