Ans: C
The number of different numbers
The number of different numbers
$\begin{array}{cl}
= & 3! \times 5! \\
= & 720
\end{array}$
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
$\begin{array}{cl}
= & 3! \times 5! \\
= & 720
\end{array}$
