Janet7815 Janet7815

17-07-2018
Mathematics

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

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17-07-2018

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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