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ipn [44]
4 years ago
7

"if n balls are distributed randomly into k urns, what is the probability that the last urn contains j balls?"

Mathematics
1 answer:
seraphim [82]4 years ago
3 0

The answer relies on whether the balls are different or not. If they are not, which is almost certainly what is intended.


If they are, the perceptive is a bit different. Your expression gives the likelihood that a particular set of j balls goes into the last urn and the other n−j balls into the other urns. But there are (nj) different possible sets of j balls, and each of them the same probability of being the last insides of the last urn, so the total probability of completing up with exactly j balls in the last urn is if the balls are different.


See attached file for the answer.

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