If ^ 12 P_r = 1320, then r is equal to - Vidyadip

MCQ

If $^{12}{P_r} = 1320$, then $r$ is equal to

A
$5$
B
$4$
✓
$3$
D
$2$

✓

Answer

Correct option: C.

$3$

c
(c) Since $^{12}{P_3} = 1320;\,\,\therefore \,\,r = 3$.

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