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3 June, 01:07

An urn contains five balls, one marked win and four marked lose. you and another player take turns selecting a ball at random from the urn, one at a time. the first person to select the win ball is the winner. if you draw first, find the probability that you will win if the sampling is done

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  1. 3 June, 05:03
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    P (win) = 1/5 + (4/5) (3/4) (1/3) + (4/5) (3/4) (2/4) (1/2) (1) = 1/5 + 1/5 + 3/20 = 11/20
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