Question

What is the value of 6P6?  A.1  B.36  C.720  D.46,656

Answer 1

$the\ permutationon:\ \ n\ P\ x= \frac{n!}{(n-x)!} \\ \\6\ P\ 6= \frac{6!}{(6-6)!} = \frac{6!}{0!}= \frac{2\cdot3\cdot4\cdot5\cdot6}{1}=720$

$Ans.\ C$