Ans: A
The required probability
The required probability
$\begin{array}{cl}
= & \dfrac{2}{10} \\
= & \dfrac{1}{5}
\end{array}$
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
$\begin{array}{cl}
= & \dfrac{2}{10} \\
= & \dfrac{1}{5}
\end{array}$
