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math

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Assuming boy and girl babies are equally likely, find the probability that a family with three children will have exactly 1 boy

  • math - ,

    prob= C(3,1) (1/2)(1/2)^2
    = 3/8

    or just list them

    BBB
    BBG
    BGB
    GBB
    GGB .....
    GBG .....
    BGG ....
    GGG

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