Question

(n-3) cimbinasi2=36 tentukan nilai n

Answer 1

(n-3) C 2 = 36
(n-3)! ./ (n-3-2)! 2! = 36
(n-3)! / (n-5) ! = 2! . 36 = 72 
(n-3)(n-4) (n-5)!/(n-5)! = 9(8)
n-3)(n-4) = 9 (8)
n - 3 = 9
n = 12