Question

7!9!/10!5! = mengebai faktorial

Answer 1

7! = 7.6.5.4.3.2.1
9! = 9.8.7.6.5.4.3.2.1
10! = 10.9.8.7.6.5.4.3.2.1
5! = 5.4.3.2.1

jadi 7! . 9! / 10! . 5! = 7.6/9= 42/9

Answer 2

7!9!/10!5! = 7.6.5!.9!/10.9!.5! = 42/10 = 4,2