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  4. Among 2 children, a child may equally be a boy or a girl if the probability that exactly one of them is a boy is p, then 6 p=

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Q. Among $2$ children, a child may equally be a boy or a girl if the probability that exactly one of them is a boy is $p$, then $6 p=$

Probability - Part 2

Solution:

Required probability $= p ={ }^2 C _1\left(\frac{1}{2}\right)\left(\frac{1}{2}\right)=\frac{1}{2}$
$\therefore 6 p=3$