27 Comments
 

well i would just approach it mathematically. estimate how many there are on a given street block, then multiply by 4 (to give a square block), then estimate how many square miles manhattan is, then how many square blocks there are in a mile to calculate the total number of square blocks in manhattan.

i don't think they're looking for the exact right answer, more your ability to reason.

 
peacerenitywell i would just approach it mathematically. estimate how many there are on a given street block, then multiply by 4 (to give a square block), then estimate how many square miles manhattan is, then how many square blocks there are in a mile to calculate the total number of square blocks in manhattan.

i don't think they're looking for the exact right answer, more your ability to reason.

There's a flaw in this. The blocks share sides with each other.

 
peacerenitywell i would just approach it mathematically. estimate how many there are on a given street block, then multiply by 4 (to give a square block), then estimate how many square miles manhattan is, then how many square blocks there are in a mile to calculate the total number of square blocks in manhattan.

i don't think they're looking for the exact right answer, more your ability to reason.

If you take this approach, be sure to only count one half of the street for every block, otherwise you end up double counting when you multiply. I doubt this will make the answer any more accurate, but it does tighten up the reasoning.

EDIT: mendeleaf beat me to it.

 

@ EngPhD

You're correct. I realized that after I had already posted my answer. It's not exactly 2 sides per square block though. It varies depending on the area and its shape.

 

I was asked how much I would charge to clean every window in NYC.

"I don't expect to have to answer that question until my account here blows up, so lets move on, shall we?"

Still not sure if I want to spend the next 30+ years grinding away in corporate finance and the WSO dream chase or look to have enough passive income to live simply and work minimally.
 

Edit: Forget my initial post

I'm way off I realize. Harvard has 90 libraries alone.

Frank Sinatra - "Alcohol may be man's worst enemy, but the bible says love your enemy."
 

Are you counting elementary and secondary schools? My relatively small college had 3 libraries...think this is too low.

Life, liberty and the pursuit of Starwood Points
 

There are hundreds of libraries located in Metropolitan Boston. There are over 50 libraries in the Harvard University system alone.

 
Best Response

Why did nobody give a structured answer yet, only final numbers? The final number is more or less irrelevant. The interviewer wants to see how you structure a problem.

First of all figure out what kind of libraries exist: Elementary schools, middle schools, highschools, universities, community colleges, public libraries, private libraries. Then guess how many libraries are associated with these places and how many persons per each type of library. Give rationales behind each answer from your own experiences (e.g. in my home town i know that etc....). Calculate the total numbers for each library type based on the population of Boston and finally add all numbers up. If you have no clue, just answer 42

 
AusterityWhy did nobody give a structured answer yet, only final numbers? The final number is more or less irrelevant. The interviewer wants to see how you structure a problem.

First of all figure out what kind of libraries exist: Elementary schools, middle schools, highschools, universities, community colleges, public libraries, private libraries. Then guess how many libraries are associated with these places and how many persons per each type of library. Give rationales behind each answer from your own experiences (e.g. in my home town i know that etc....). Calculate the total numbers for each library type based on the population of Boston and finally add all numbers up. If you have no clue, just answer 42

1,283. Proprietary algorithm.
 

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Nothing short of everything will really do.
 

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Nothing short of everything will really do.

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