Mathematics, 19.02.2020 05:17, alissa3329

A jar contains 4 white and 4 black marbles. We randomly choose 4 marbles. If 2 of them are white and 2 are black, we stop. If not, we replace the marbles in the jar and again randomly select 4 marbles. This continues until exactly 2 of the 4 chosen are white. What is the probability that we shall make exactly n selections?

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A jar contains 4 white and 4 black marbles. We randomly choose 4 marbles. If 2 of them are white and...