Question

Tentukan nilai n ? mohon bantuannya

Answer 1

N! / (n-2)! = 2(n-1)!/ (n-3)!
n.(n-1)! / (n-3)!.(n-2) = 2.(n-1)! / (n-3)!
n / (n-2) = 2
n = 2.(n-2)
n = 2n - 4
4 = n