Ans: B
The required number of password formed
$\begin{array}{cl}
= & 5! \times 2! \\
= & 240
\end{array}$
Resources for HKDSE Mathematics
Resources for HKDSE Mathematics
The required number of password formed
$\begin{array}{cl}
= & 5! \times 2! \\
= & 240
\end{array}$
