答案：$\dfrac{5}{42}$
$P(\text{沒有男生在該隊中相鄰而排})$
$P(\text{沒有男生在該隊中相鄰而排})$
$\begin{array}{cl}
= & \dfrac{5! \times P^6_4}{9!} \\
= & \dfrac{5}{42}
\end{array}$
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