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If there are two children in a family. Find the probability that there is at least one girl child in the family.

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Best answer

Li S = {HB, BG, GB, GG}, n(S) = 4 

A: At least one girl, 

A= {BG,GB,GG}, n(A) = 3 

P(A) = \(\frac{n(A)}{n(S)} = \frac{3}{4}\)

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