SOLUTION: a couple plans to have four children. find the probability that the first three children are girls and the last child is a boy.

Question 1138186: a couple plans to have four children. find the probability that the first three children are girls and the last child is a boy.
Answer by ikleyn(52858) (Show Source): You can put this solution on YOUR website!
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The number of all possible configurations in  this problem is  = 16.


Any fixed configuration has the probability  .


Answer.  The probability under the question is .

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