Pls answer ques 15

Dear Student,
According to Conditional Probability,
$$\begin{gathered} P(F/E)=\frac{P(F\cap E)}{P\left(E\right)} \\ = \frac{{\displaystyle \frac{1}{6}}}{{\displaystyle \frac{3}{6}}}=\frac{1}{3} \end{gathered}$$
Regards.