Question

3! =
24
9
6
None of the above

Answer 1

None of the above

Answer 2

\[3!=3\cdot2\cdot1=6\]By the definition of factorial.

Answer 3

@KingGeorge I dont understand . How do you know what the "!" means ?

Answer 4

When you see a number with a "!" after it, that means factorial. It's just the definition, and I've used it enough to recognize it.