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Mathematics 8 Online
OpenStudy (anonymous):

An urn contains white balls numbered 1 to 15 and black balls also numbered 1 to 15. Suppose you draw 4 balls. What is the probability that (b) you get exactly one pair with the same number? (c) you get two pair with the same numbers?

OpenStudy (anonymous):

You're back lol

OpenStudy (anonymous):

ha

OpenStudy (anonymous):

it's like throwing 2 15-sided dice

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