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4 May, 21:41

A bag contains five white marbles and five black marbles. What is the probability of drawing a white marble, not replacing it, and then drawing a black marble

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  1. 4 May, 22:03
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    5+5 = 10 total marbles

    5/10 = 1/2 probability of picking a white one first

    then you have 9 marbles so a 5/9 chance of picking a black one

    1/2 x 5/9 = 5/18 probability of choosing a white then a black marble
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