Nilai n yang memenuhi n!/(n-2)! = 12 adalah …

N!/(n – 2)! = 12
=> n (n – 1)(n – 2)!/(n – 2)! = 12
=> n^2 – n – 12 = 0
=> (n – 4)(n + 3) = 0
=> n = 4 atau n = -3
yg diambil n = 4