alleryThe value of $5!$ is:
A$120$
B$60$
C$720$
D$25$
Answer & Solution
Correct answer: A. $120$
Factorial definition: $n! = n \times (n-1) \times (n-2) \times \ldots \times 1$.
$5! = 5 \times 4 \times 3 \times 2 \times 1 = 120$.
Quick reference: $4! = 24$, $5! = 120$, $6! = 720$ (option D is $6!$, not $5!$). Factorials grow fast.
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