Mathematics, 27.06.2019 17:30 bakoeboo

Abox contains 20 different balls numbered from 1 to 20 (different balls have different numbers). at each step, we select a ball uniformly at random, record the number on it, and put it back in the box. this experiment is repeated 10 times. find the probability that all the numbers recorded were distinct.

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Abox contains 20 different balls numbered from 1 to 20 (different balls have different numbers). at...

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