Question

calcule 5! sobre 3!+2!

Answer 1

5! = 5x4x3x2x1 = 120
3! = 3x2x1 = 6
2! = 2x1 = 2

120/6+2 = 120/8 = 15

Answer 2

   5!     = 5.4.3.2!  =  5.4.3.2! = 60 ==> 15
3! + 2!     3.2!+2!      2!(3+1)     4