SOLUTION: Assume that the probability is 1/2 that a baby born is a boy. If a couple has two children, what is the probability that both are girls? Assume that births are independent of each

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Hi,         

Assuming that the probability is 1/2 that a baby born is a boy:

Then the probability of being a girl is 1/2.

P(the 2 children are both girls) = 1/2 * 1/2 = 1/4