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Quick question numeric queries

Calculation tips Case Calculations

Most recent answer on Jun 30, 2022

gave the best answer on Jun 28, 2022

Hi Ryan, I highly advise you just quickly flag what you would like to calculate and why. There is only upside here. You are being communicative and taking the client (interviewer) on the journey. If you're wrong then th ... (read entire answer)

6
Answers

998
Views

36
Total Upvotes

on Jun 30, 2022 on Jun 30, 2022
Last Activity

How to calculate a market sizing case instinctively and quickly?

Calculation tips Case Calculations Market sizing mental math

Most recent answer on Dec 31, 2021

gave the best answer on Dec 31, 2021

Hi there, Providing some market sizing thinking for anyone revisiting this Q&A: Remember that there's rarely a "best" answer with market sizing. What's important is that you break down the problem the way it makes s ... (read entire answer)

2
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3.1 k
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2
Total Upvotes

on Dec 31, 2021 on Dec 31, 2021
Last Activity

Is there a trick to quickly estimate the average annual growth percentage / to or total compounded growth, without a calculator? i.e. X will grow with 5% for the coming 10 years.

Bain BCG Calculation tips Case Calculations Case Interview case interview preparation compounded growth GMAT MathSkills IB Math problem Mck McKinsey McKinsey casing summer internship mental math percentage growth

Question edited on May 06, 2021

Vlad

Expert

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

Vlad

Expert

gave the best answer on Apr 02, 2018

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

Hi, You can use the rule of 72. For example, if you know the revenue will grow from 100M to 400M in 12 years and you need to know the CAGR: 100M will double and grow to 200M in 6 years CAGR = 72 / 6 / 100 = 12 ... (read entire answer)

8
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25.9 k
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22
Total Upvotes

on May 06, 2021 on May 06, 2021
Last Activity

Looking for exciting discussions from the community?

Scientific notations to ease calculation

Calculation tips Case Calculations Scientist Background

Most recent answer on Mar 23, 2020

Daniel

Expert

McKinsey / ex-Interviewer at McKinsey / I will coach you to rock those interviews

Daniel

Expert

gave the best answer on Mar 20, 2020

McKinsey / ex-Interviewer at McKinsey / I will coach you to rock those interviews

Hi Clement! you can definitely do that, as long as you arrive to the right answer nobody cares how you calculate it.

7
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1.9 k
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5
Total Upvotes

on Mar 23, 2020 on Mar 23, 2020
Last Activity

Calculation during case

Calculation tips

Most recent answer on Sep 23, 2019

Anonymous gave the best answer on Sep 23, 2019

Dear A, Yes, that is expected from you during the interview. Let me know, if you need any help during preparation to the interview. Best, André

3
Answers

1.5 k
Views

4
Total Upvotes

on Sep 23, 2019 on Sep 23, 2019
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Consulting Q&A – Ask Questions about Your Career

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