1. $3$ of the $25$ women have a shoe size of $7$
Zoe says that if you choose at random one of the $25$ women, the probability that she has

either a shoe size of $7$or a dress size of $14$ is  $\frac{9}{25}$because

$\frac{3}{25}+\frac{6}{25}=\frac{9}{25}$

Is Zoe correct?
You must give a reason for your answer.