Answer:
D
Explanation:
n! ( factorial ) is defined as
n! = n(n - 1)(n - 2) ..... × 3 × 2 × 1
then
6! = 6 × 5 × 4 × 3 × 2 × 1 = 720
3! = 3 × 2 × 1 = 6
=
= 120
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