Ten persons, amongst whom are A, B and C to speak at a function. The n – McqOptions

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1.	Ten persons, amongst whom are A, B and C to speak at a function. The number of ways in which it can be done if A wants to speak before B and B wants to speak before C is
A.	\[\frac{10\ !}{6}\]
B.	\[3\ !\ 7\ !\]
C.	\[^{10}{{P}_{3}}\ .\ 7\ !\]
D.	None of these
Answer» B. \[3\ !\ 7\ !\]

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