Question

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

• A. $\frac{1}{4}$
• B. $\frac{1}{2}$
• C. $\frac{3}{4}$
• D. none of these

Answer 1

The correct option is C $\frac{3}{4}$

$S=\{GG,GB,BG,BB\}andE=\{GG,GB,BG\}\therefore P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}=\frac{3}{4}$