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, t... (more)

# All questions tagged brainteaser - Consulting Q&A - PrepLounge.com

Hi, Why don't you calculate the meat consumption in China from the population and then get the number of pigs from that? Best

Estimate the number of radio stations that have more than 1 million listeners who listen at least on... (more)

On a related note: I have always had very positive feedback from interviewers when I told them that I already knew the answer to a given brainteaser, instead of pretending to solve it right then a... (more)

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... (more)

Hallo Anonym A, aus meiner Sicht lässt sich der Brainteaser deutlich einfacher lösen: Ansatz In Deutschland leben ca 83 Mio (runden auf 80 Mio) Menschen Die durchschnittliche Leben... (more)

Hey there Here is one approach: # Hair Salons = (# hours required for men's haircuts per year + # hours required for women's haircuts per year) / average service capacity of 1 hair salon (which... (more)

Hi Anonymous, first of all - this is not a brain teaaser, but an ordinary estimation question! Here is a high-level approach: I would start with the second question, because it is most straight forw... (more)

Maybe oversimplistic but my approach would be the following: I would start by assuming that every person who is born in Germany at a certain point in his/her life (18,23,30 years old...) will start... (more)

Hi, I will use the following approach: You may use the speed of a plain as the benchmark and assume that the Ocean 1/2 of a Sphere: It takes X hours to fly from A to B over the Atlantic Oc... (more)

Hello! In order for you to find out the answer, I would consider looking at these factors: (this way you find it out yourself and you can learn from it :) ) - How many clients does a McDonald have... (more)

I got the strategy to answer market sizing questions like "How many petrol stations are there in cit... (more)

Our Goal: #elephants #elephant = (elephant to human ratio) * (total human population) = 1 truck per 10,000 person (assumption) * 7B people = 7,000,000,000/10,000 elephants in total =... (more)

Hi, good question! Probably somewhat depending on your interviewer, but this is my view on it. In this situation it's important to try to showcase as mluch of your consulting skills as possible. Be... (more)

Hi, First of all, I totally agree with Francesco on the process. You should always come back to the cases you've solved and reevaluate your structures. Secondly, I believe it's very much related... (more)

Hi Anonymous, there may be several reasons for that; some of them, in order of frequency, are: Your structure is not complete enough – you are just using not MECE/ not complete structure... (more)

Hi, thanks for your question. I think the case is essentially testing your ability to segment a massive concept like 'internet websites' to its components. Below is my answer for this case: Assume... (more)

Hi, here's how I would approach it - Define the geographic area to be covered [the whole world? the U.S.? NYC? Manhattan?...for this example I'll use Manhattan] - Population living there [~ 1... (more)

Hey! The cases usually test strategy, finance and business development. You should be familiar with the common business concepts and financial terms and calculations (CF, BS etc). Abo... (more)