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21 April, 16:34

A couple wants to have 5 kids. find the probability that they have at least one boy.

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  1. 21 April, 16:41
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    Probability of having at least 1 boy = 1 - the probability of having ALL girls.

    P (5 girls) = (1/2) ⁵ = 1/32

    P (At least 1 boy) = 1 - 1/32 = 31/32

    Answer: 31/32
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