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Algebra

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Permutations and Combinations 21

ALGEBR-FQVQC2

Which of the following is NOT equivalent to $_{6}C_{4}$?

A

$\cfrac{6!}{(6-4)!4!}$

B

$_6C_2$

C

$\cfrac{_6P_4}{4!}$

D

$40$