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Birthdays of N People in a Room

Writer's picture: Ashlar STEMAshlar STEM

There are N randomly chosen people in a room. Let Q be the probability of having all these N people to have different birthdays (excluding years), and let P be the probability of having at least two people out of these N people to have the same birthday (excluding years). Hence, based on these definitions P + Q = 1. What is the minimum value for N so that P ≥ Q? Note that one year includes 365 days.



SOLUTION:

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