E
Editor
Sep 18, 2022
$^{n}P_{n}$=
Difficulty: Easy
A:
$(n-1)!$
B:
$\frac{n}{(n-1)!}$
C:
$\frac{n!}{(n-1)!}$
D:
$n!$
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ID: 63273dbaca83163ac3a12397