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Question

If there are two children in a family, find the probability that there is atleast one girl(children) in the family.

A
14
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B
12
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C
34
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D
none of these
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Solution

The correct option is C 34
S={GG,GB,BG,BB}and E={GG,GB,BG}P(E)=n(E)n(S)=34

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