Question

quanto é

3! x 5!/ 4! x 6!

12! / 10! + 9!

12! x 13! / 12!

Answer 1

3!=3x2x1= 6

5!=5x4x3x2x1= 120

4!=4x3x2x1= 24

6!=6x5x4x3x2x1= 720

3!x5!/4!x6! = 6x120/24x720 = 1/24

12!/10!+9! = 120

12!x13!/12! = 13