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29 April, 21:52

Suppose that the die is rolled twice, rather than once. find the probability of rolling an even number on at least one die. find p (aon first toss or a on second toss)

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  1. 29 April, 23:09
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    We know P = 1/2

    X~B (2, 0.5)

    n = 1

    2C1 from pascal triangle = 2

    P (X=0.5) = 2C1 x 0.5 x 0.5

    = 0.5

    = 50%
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