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legacy2013

I had a great question once that didn't show my skills explicitly, but showed my reasoning skills.

Say you are at a restaurant in the city, and your friend asks how many people are on Facebook at any given moment in the city. How would you answer this without writing any code, on the spot at the restaurant?

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How is this not a "how many ping pong balls fit in the empire state building" sort of estimating question? Am I missing something about it?

This seems as if the answer is pretty related to how profiling works, i.e. you would use the restaurant's clients as a sample set and sample it at regular intervals and then use the average scaled to the city's population.

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