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Math Help - binomial probability!

  1. #1
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    binomial probability!

    a couple plans to have three children. find the probability of getting exactly two boys and two girls

    i used binomial and got  \frac{3}{8}+\frac{3}{8}= \frac{3}{4}

    pls query me otherwise, thanks
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  2. #2
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    Re: binomial probability!

    Quote Originally Posted by lawochekel View Post
    a couple plans to have three children. find the probability of getting exactly two boys and two girls

    i used binomial and got  \frac{3}{8}+\frac{3}{8}= \frac{3}{4} INCORRECT
    Reread your posting. There cannot be three children if exactly two boys and two girls. That is four. Which is it?
    Thanks from lawochekel
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