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Solution to birthday probability problem: If there are n people in a classroom, what is the probability that at least two of them have the same birthday?
General solution:
P = 1-365!/(365-n)!/365^n
If you try to solve this with large n (e.g. 30, for which the solution is 29%) with the factorial function like so:
P = 1-factorial(365)/factorial(365-30)/365^30
Matlab will output NaN because Matlab tries to compute very...