Imagine a couple that is ready to start a family. They plan to have exactly four children. Assuming no multiple births (twins, triplets, etc.), use the information provided in Pascal's triangle (in figure above) to determine how many different ways they may have exactly three boys and one girl (regardless of birth order).

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asked Nov 21, 2012 in Genetics by GeneX ~Top Expert~ (7,933 points)

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answered Nov 21, 2012 by GeneX ~Top Expert~ (7,933 points)

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