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Brain teaser - babies born per year / month / day?

brainteaser Market sizing
Most recent answer on Oct 17, 2023
The best answer (on Dec 30, 2019) is from:
Antonello
Expert
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
Antonello
Expert
gave the best answer on Dec 30, 2019
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
Hi, US population: 320M Life expectation: 80y HP: Population equally spread for every age -> 0-1 years old: 320M/80 = 4M Baby born in a day: 4M/365 = 11k Best, Antonello
5
Answers
5.7 k
Views
7
Total Upvotes
on Oct 17, 2023 on Oct 17, 2023
Last Activity

Brain teaser / market sizing

brainteaser Market sizing
Most recent answer on Jul 27, 2023
The best answer (on Jun 22, 2019) is from:
Vlad
Expert
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Vlad
Expert
gave the best answer on Jun 22, 2019
McKinsey / Accenture Alum / Got all BIG3 offers / Harvard Business School
Hi, Why don't you calculate the meat consumption in China from the population and then get the number of pigs from that? Best
3
Answers
8.4 k
Views
20
Total Upvotes
on Jul 27, 2023 on Jul 27, 2023
Last Activity

First Interview a Implement: Brainteasers

brainteaser
Most recent answer on Jun 22, 2023
The best answer (on Jun 21, 2023) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
gave the best answer on Jun 21, 2023
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi Emil, Congrats on the interview! Brain teaser could be many things! However, in general they should be more business focused. You might expect a brainstorming question in particular. Some brainteasers are quite trick ... (read entire answer)
3
Answers
446
Views
30
Total Upvotes
on Jun 22, 2023 on Jun 22, 2023
Last Activity

How many electric charging stations are there in Germany?

brainteaser estimation guess-estimates Market sizing
Most recent answer on Apr 19, 2023
The best answer (on Apr 19, 2023) is from:
Cristian
Expert
#1 rated MBB & McKinsey Coach
Cristian
Expert
gave the best answer on Apr 19, 2023
#1 rated MBB & McKinsey Coach
Hi there,  You have a sound approach.  For market sizing questions, I'd recommend you also try and have some fun with ChatGPT. Try asking for several approaches and try to learn from how it chooses to do the sizing diff ... (read entire answer)
3
Answers
636
Views
35
Total Upvotes
on Apr 19, 2023 on Apr 19, 2023
Last Activity

commercial passenger aircraft worldwide

brainstorming questions brainteaser Market sizing
Most recent answer on Apr 17, 2023
The best answer (on Apr 16, 2023) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
gave the best answer on Apr 16, 2023
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi there, I think overall you've done a nice job here! 8 or 9 out of 10! Here's what I like: Overall approach is logical (# of passengers ==> flights ===>planes) You have estimated not assumed (even though you sai ... (read entire answer)
2
Answers
470
Views
22
Total Upvotes
on Apr 17, 2023 on Apr 17, 2023
Last Activity

market for cannabis in Germany

brainteaser estimation market estimation Market sizing
Most recent answer on Apr 16, 2023
The best answer (on Apr 16, 2023) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
gave the best answer on Apr 16, 2023
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi there, About a 6 out of 10 here. #1 Thing Missing: HOW you got to these numbers. You need to make sure you are never guessing for numbers. Rather, you are making estimates based on your knowledge of the world. So: Ho ... (read entire answer)
3
Answers
683
Views
23
Total Upvotes
on Apr 16, 2023 on Apr 16, 2023
Last Activity

Effects of cannabis legalisation in Germany

brain teaser brainstorming questions brainteaser
Most recent answer on Apr 16, 2023
The best answer (on Apr 15, 2023) is from:
Emily
Expert
Ex McKinsey EM & interviewer (5 yrs) USA & UK| Coached / interviewed 300 +|Free 15 min intro| Stanford MBA|Non-trad
Emily
Expert
gave the best answer on Apr 15, 2023
Ex McKinsey EM & interviewer (5 yrs) USA & UK| Coached / interviewed 300 +|Free 15 min intro| Stanford MBA|Non-trad
Hi there!  So when you're answering a case question you want to create a structure which is specific to the question. Your structure of micro / macro is very generic and doesn't answer the question specifically.  For ex ... (read entire answer)
3
Answers
429
Views
22
Total Upvotes
on Apr 16, 2023 on Apr 16, 2023
Last Activity

Brainteaser: How to see the light of refrigerator after the door is closed?

Bain & Company brainteaser
Most recent answer on Jan 04, 2022
The best answer (on Jan 03, 2022) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
gave the best answer on Jan 03, 2022
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi Jasmin, This is a variation on another brainteaser (actually one I was asked 10 years ago for my first job in IT). The answer is to close the door, let the door stay closed for a while, then open the door and touch t ... (read entire answer)
4
Answers
2.8 k
Views
25
Total Upvotes
on Jan 04, 2022 on Jan 04, 2022
Last Activity

Brain Teaser

brainteaser
Most recent answer on Oct 24, 2021
The best answer (on Oct 22, 2021) is from:
Pedro
Expert
Bain | EY-Parthenon | Roland Berger | Market Sizing | 30% off in March 2024
Pedro
Expert
gave the best answer on Oct 22, 2021
Bain | EY-Parthenon | Roland Berger | Market Sizing | 30% off in March 2024
I don't think this is a brainteaser, but rather a question to check if one has any idea on how the world works. In this case, how the VAT rates work (I am assuming you are in a country that applies VAT). I would expect ... (read entire answer)
3
Answers
1.1 k
Views
35
Total Upvotes
on Oct 24, 2021 on Oct 24, 2021
Last Activity

Estimate how many hospital beds for pregnant women are necessary in a year in the US

brainteaser Guesstimate Market sizing
Most recent answer on May 16, 2021
The best answer (on Apr 26, 2021) is from:
Ian
Expert
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Ian
Expert
gave the best answer on Apr 26, 2021
#1 BCG coach | MBB | Tier 2 | Digital, Tech, Platinion | 100% personal success rate (8/8) | 95% candidate success rate
Hi there, You'll really get the best out of this exercise if you try it yourself. Why don't you post what you're thinking and we can help? Hint: Do you think this makes more sense top-down or bottom up? Gene ... (read entire answer)
3
Answers
2.1 k
Views
31
Total Upvotes
on May 16, 2021 on May 16, 2021
Last Activity

Bain interview

Bain brainteaser Europeanoffices inteview
Most recent answer on Feb 23, 2021
The best answer (on Feb 22, 2021) is from:
Antonello
Expert
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
Antonello
Expert
gave the best answer on Feb 22, 2021
McKinsey | NASA | top 10 FT MBA professor for consulting interviews | 6+ years of coaching
Hi Mehrasa, I would like to suggest some useful cases in the platform to practice with: https://www.preplounge.com/en/consulting-forum/how-much-would-you-charge-to-clean-all-the-windows-in-seattle-4965 https://www ... (read entire answer)
7
Answers
1.2 k
Views
96
Total Upvotes
on Feb 23, 2021 on Feb 23, 2021
Last Activity

Brain teaser

brainteaser
Most recent answer on Feb 18, 2021
The best answer (on Feb 17, 2021) is from:
Allen
Expert
Ex-McK Experienced Hire and EM - I show you how to perform at your best
Allen
Expert
gave the best answer on Feb 17, 2021
Ex-McK Experienced Hire and EM - I show you how to perform at your best
Remember, the key is to identify drivers, estimate the value, and use good judgement throughout. Here's what I would do: Assume the majority of the weight will be the metal structure, not the stairs or the screws ... (read entire answer)
3
Answers
1.4 k
Views
31
Total Upvotes
on Feb 18, 2021 on Feb 18, 2021
Last Activity

It is a silly question - but, What's the role of mental math & brain teasers in interviews?

brain teaser brainteaser mental math
Most recent answer on Nov 16, 2020
The best answer (on Oct 22, 2018) is from:
Francesco
Expert
#1 Coach for Sessions (4.000+) | 1.500+ 5-Star Reviews | Proven Success (➡ InterviewOffers.com) | Ex BCG | 10Y+ Coaching
Francesco
Expert
gave the best answer on Oct 22, 2018
#1 Coach for Sessions (4.000+) | 1.500+ 5-Star Reviews | Proven Success (➡ InterviewOffers.com) | Ex BCG | 10Y+ Coaching
Hi Anonymous, I agree with Vlad, brainteasers are not very common (referring to my experience, when I applied, I got 1 out of 20+ interviews). Still, answering to your question, why do they ask them? The main reason ... (read entire answer)
6
Answers
3.1 k
Views
9
Total Upvotes
on Nov 16, 2020 on Nov 16, 2020
Last Activity

What would be the feasible answer/approach for this pricing case study question?

brainteaser Pricing case study Pricingstrategy
Most recent answer on Oct 23, 2020
The best answer (on Oct 29, 2020) 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 Oct 29, 2020
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Hi! This can only happen if the two phones have different price levels, and a shift towards the cheaper phone has happened after the price increase, and the price of the cheaper phone after the price increase is still ... (read entire answer)
2
Answers
1.1 k
Views
16
Total Upvotes
on Oct 23, 2020 on Oct 23, 2020
Last Activity

Are brain teasers actually used in consulting interviews?

brainteaser Case Interview
Most recent answer on Apr 30, 2020
The best answer (on Jan 28, 2020) 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 28, 2020
McKinsey Senior EM & BCG Consultant | Interviewer at McK & BCG for 7 years | Coached 350+ candidates secure MBB offers
Hi! the use of Brainteasers differs across the tiers: Not used in MBB Sometimes used in Tier 2 firms (Berger, Wyman etc.) Frequently used in Tier 3 firms (AD Little etc.) Cheers, Sidi
11
Answers
2.6 k
Views
16
Total Upvotes
on Apr 30, 2020 on Apr 30, 2020
Last Activity

Coronavirus' economic impact on China

brainteaser Coronavirus covid19
Most recent answer on Mar 19, 2020
Anonymous C gave the best answer on Mar 03, 2020
Hi, guess this could help structure an approach ! My take is we could simply strcuture in Bain's way - human cost & economic cost. Economic cost - Short to Medium Term Impact Human cost - Long term impact (gu ... (read entire answer)
4
Answers
2.0 k
Views
1
Total Upvotes
on Mar 19, 2020 on Mar 19, 2020
Last Activity

How many trains are there in London?

brainteaser calculation estimation
Most recent answer on Sep 06, 2019
Anonymous A asked on Sep 05, 2019
I got this question during an interview for a non-consulting job before I learned at all about structuring and break-down analysis tecniques (so I was not prepared at all!). At the time I went down a "number of tube sta ... (read entire question)
1
Answer
2.9 k
Views
0
Total Upvotes
on Sep 06, 2019 on Sep 06, 2019
Last Activity

Brain teaser "clock observation"

brainteaser
Question edited on Aug 16, 2019
Anonymous A gave the best answer on Oct 27, 2017
Hey everyone, here is a longer solution that the preblounge team sent me. Maybe it helps you too. The hour hand of a clock is exactly on the minute mark five times each hour i.e. on the hour, twelve minutes past the ... (read entire answer)
3
Answers
7.0 k
Views
9
Total Upvotes
on Aug 16, 2019 on Aug 16, 2019
Last Activity

Estimate the number of radio stations

brainteaser Market sizing
Recent activity on Jan 22, 2019
Anonymous A gave the best answer on Jan 22, 2019
It looks like a bit of both market sizing and brain teasing. Assuming you have no data to work on, the interviewer wants to see how you think through and structure the problem. For questions like this (and most case que ... (read entire answer)
1
Answer
2.1 k
Views
1
Total Upvotes
on Jan 22, 2019 on Jan 22, 2019
Last Activity

Braninteasers in Consulting Interview

brainteaser
Recent activity on Oct 22, 2018
The best answer (on Oct 21, 2018) is from:
Guennael
Expert
Ex-MBB, Experienced Hire; I will teach you not only the how, but also the why of case interviews
Guennael
Expert
gave the best answer on Oct 21, 2018
Ex-MBB, Experienced Hire; I will teach you not only the how, but also the why of case interviews
We really dont do too many, especially in MBB. Brain teasers are more common in IB; even Google has pretty much stopped them since they realized brainteasers dont yield any actionable 8nsight into the value of an applic ... (read entire answer)
2
Answers
2.0 k
Views
1
Total Upvotes
on Oct 22, 2018 on Oct 22, 2018
Last Activity
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