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Guesstimate - How many workers did it took to build the pyramids?

case guesstimation guess-estimates Guesstimate issue tree
Most recent answer on Mar 16, 2022
The best answer (on Mar 15, 2022) is from:
Moritz
Expert
ex-McKinsey EM & Interviewer | 7/8 offer rate for 4+ sessions | 90min sessions with FREE exercises & videos
Moritz
Expert
 gave the best answer on Mar 15, 2022
ex-McKinsey EM & Interviewer | 7/8 offer rate for 4+ sessions | 90min sessions with FREE exercises & videos
Hi there, Can't believe this actually came up in a real interview! The most comprehensive answer would have to consider the fatality rate of slaves ('workers' is a bit of a euphemism), which is a weird thing to talk abo ... (read entire answer)
2
Answers
928
Views
21
Total Upvotes
on Mar 16, 2022 on Mar 16, 2022
Last Activity

What is the best approach to tackle a guesstimate?

case guesstimation guess-estimates Guesstimate
Most recent answer on May 01, 2020
Anonymous gave the best answer on Apr 23, 2020
Interviewers are looking for following skills when evaluating a guesstimate How structured is your approach? Are you able to make quick checks on the efficiency of different methods? Can you make back of the env ... (read entire answer)
5
Answers
3.2 k
Views
19
Total Upvotes
on May 01, 2020 on May 01, 2020
Last Activity

Marketing Sizing - How many pizza are sold in Brazil?

case guesstimation Guesstimate marketing
Most recent answer on Sep 12, 2019
Anonymous gave the best answer on Oct 23, 2018
I think there are 2 issues in your approach - 1. You started first with age group and then shifted to households Households will have people less than 15 and more than 50 years of age. In your approach, it looks li ... (read entire answer)
2
Answers
5.5 k
Views
9
Total Upvotes
on Sep 12, 2019 on Sep 12, 2019
Last Activity

Estimate total pollution created by vehicles passing through a busy roundabout in a day.

approaching a case Case case guesstimation Guesstimate
Recent activity on Jan 24, 2019
The best answer (on Jan 23, 2019) is from:
Sidi
Expert
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Sidi
Expert
 gave the best answer on Jan 23, 2019
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Pragmatic approach: 1. Segment into types of vehicles 2. Estimate pollution intensity per vehicle type (e.g., if it takes 30 seconds to pass the roundabout on average, what is the pollution per 30 secons?) 3. Esti ... (read entire answer)
3
Answers
2.4 k
Views
8
Total Upvotes
on Jan 24, 2019 on Jan 24, 2019
Last Activity

Consulting Case: How many rádio stations have in the USA?

case guesstimation Guesstimate
Recent activity on Oct 29, 2018
Anonymous gave the best answer on Oct 29, 2018
Hi, I think your approach has its merits. However, I believe your assumptions are overly aggressive - 3 radio stations in a small town is A LOT. Now the challenge is to come up with numbers for the number of sma ... (read entire answer)
1
Answer
2.0 k
Views
2
Total Upvotes
on Oct 29, 2018 on Oct 29, 2018
Last Activity

Valuation/Sizing - Determine an appropriate value and method for valuation of the Empire State building?

case guesstimation Guesstimate Market sizing Valuation
Recent activity on Oct 20, 2018
The best answer (on Oct 20, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on Oct 20, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, You may use several methods: Discounted cash flows from the rent + other revenue streams (e.g. observation deck, souvenirs, events, etc) The fair value of assets (land, building) Benchmarking with similar ... (read entire answer)
1
Answer
2.4 k
Views
2
Total Upvotes
on Oct 20, 2018 on Oct 20, 2018
Last Activity

Market Sizing - Number of cars sold in Malaysia per Year

case guesstimation Guesstimate Market sizing
Recent activity on Oct 18, 2018
The best answer (on Oct 18, 2018) is from:
Francesco
Expert
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Francesco
Expert
 gave the best answer on Oct 18, 2018
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success (➡ interviewoffers.com) | Ex BCG | 10Y+ Coaching
Hi Anonymous, as mentioned by Elias, the fact that you don't get the exact number is not a major problem in a market sizing so far that you are not an order of magnitude above or below the real number - your structure ... (read entire answer)
3
Answers
6.3 k
Views
12
Total Upvotes
on Oct 18, 2018 on Oct 18, 2018
Last Activity

Total Number of Gas Station/Restaurant Question

case guesstimation estimation gas station interview questions Market sizing McKinsey quant problems
Recent activity on Sep 25, 2018
The best answer (on May 15, 2018) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
 gave the best answer on May 15, 2018
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, I am not completely sure whether you are talking about the general calculations or a market sizing quant problem. If it is the general math, you follow these steps: Take a minute to think about the problem ... (read entire answer)
14
Answers
12.6 k
Views
31
Total Upvotes
on Sep 25, 2018 on Sep 25, 2018
Last Activity

Area of a plane in square meters

case guesstimation
Recent activity on May 07, 2018
Anonymous gave the best answer on May 07, 2018
So you'll just need to brush up a bit on your high-school geometry / trigonometry / mensuration. Best to solve these by drawing it out on a piece of paper. Roughly, a plane is: - a long cylinder of radius R - wing ... (read entire answer)
2
Answers
3.7 k
Views
3
Total Upvotes
on May 07, 2018 on May 07, 2018
Last Activity
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