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21 November, 07:53

One bag contains 4 white marbles and 2 black marbles; another contains 3 white marbles and 5 black marbles. if one marble is drawn from each bag, find the probability that both are white.

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  1. 21 November, 08:05
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    Bag 1 : 4 white marbles, 2 black marbles ... total of 6 marbles ... probability of first marble picked being white is : 4/6 reduces to 2/3

    bag 2 : 3 white marbles, 5 black marbles ... total of 8 marbles ... probability of second marble picked being white is : 3/8

    probability of both marbles being white is : 2/3 * 3/8 = 6/24 reduces to 1/4 <==
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