E
Editor
Sep 18, 2022
$n^{2}+3n+2$=
Difficulty: Easy
A:
$\frac{n!}{(n-1)!}$
B:
$\frac{(n-1)!}{n!}$
C:
$\frac{(n+2)!}{n!}$
D:
$\frac{(n-2)!}{n!}$
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ID: 63273dbaca83163ac3a123c9