Find the variance of the number of bear

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Reference no: EM131400643

A total of 3n bears are in a bucket: n are red, n are yellow, and n are blue. A child begins grabbing the bears at random, with all selections equally likely. The bears are selected "without replacement," i.e., she never puts the bears back after she grabs them. Find the variance of the number of bears she grabs until the first red bear appears.

Reference no: EM131400643

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