A) \[\frac{1}{4}\]
B) 1
C) \[\frac{1}{2}\]
D) \[\frac{1}{8}\]
Correct Answer: C
Solution :
The chance of being a boy or girl \[p=\frac{1}{2},\] \[q=\frac{1}{2}\] Total child = 2, Number of boys = 1 \[P\](1 boys, 1 girl) \[={}^{2}{{C}_{1}}{{\left( \frac{1}{2} \right)}^{1}}{{\left( \frac{1}{2} \right)}^{2-1}}=\frac{1}{2}.\]
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