Question

Help me please!!!!

5!4! = [?]

Answer 1

2880

Explanation:

1! = 1

2! = 1*2 = 2

3! = 1*2*3 = 6

4! = 1*2*3*4 = 24

5! = 1*2*3*4*5 = 120

Thus, 5!*4! = (120)(24) = 2880 (answer)

Answer 2

" ! " is the factorial operator. Here are some examples of its use:

1! = 1
2! = 1*2 = 2
3! = 1*2*3 = 6
4! = 1*2*3*4 = 24
5! = 1*2*3*4*5 = 120

Thus, 5!*4! = (120)(24) = 2880 (answer)