Hitunglah n jika (n + 1 ) P5 = 32nP3

langsung aja y

P5 = 5! = 120
P3 = 3! = 6

maka
(n+1)P5 = 32nP3
120n + 120 = 32n.6
120n + 120 = 192n
192n - 120n = 120
72n = 120
n = 120 : 72
n = 1,67

semoga berguna +_+