Question

Evaluate 5! + 2!.
a. 60
b. 122
c. 5,040

Answer 1

5! = 5*4*3*2*1
2! = 2*1
n! = n*(n-1)*...*2*1

Answer 2

so, the exclamation point means multiply the number by all the numbers below it?

Answer 3

yeah, it's called the factorial operator.

Answer 4

ok thanks