Answer:
A: 120
Step-by-step explanation:
5! means 5 factorial
the factorial of a number is the number times every whole number until 1
in this case,
5 * 4 * 3 * 2 * 1
5 * 4 = 20 , 3 * 2 * 1 = 6
20 * 6 = 120 (option A)
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