Mathematics, 27.02.2020 01:46 janelisse199820
An urn contains n red balls and m blue balls. They are withdrawn one at a time until a total of r, r β€ n, red balls have been withdrawn. Find the probability that a total of k balls are withdrawn. Hint: A total of k balls will be withdrawn if there are r β 1 red balls in the first k β 1 withdrawals and the kth withdrawal is a red ball.
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An urn contains n red balls and m blue balls. They are withdrawn one at a time until a total of r, r...
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