Question

Nilai n yang memenuhi n! / (n-2)! = 6 adalah.
! = Faktorial

Answer 1

Verified answer

Kelas 10 Matematika
Bab Peluang

n ! / (n - 2) ! = 6
n . (n - 1) . (n - 2) ! / (n - 2) ! = 6
n (n - 1) - 6 = 0
n² - n - 6 = 0
(n - 3) (n + 2) = 0
n + 2 = 0
n = -2 (tidak memenuhi karena negatif)

n - 3 = 0
n = 3

Maka, n = 3