@FIX
C(7, 3) x C(4, 2) x C(2,1) x C(1,1) 7!/3!4! = 7.6.5.4!/3!4! = 7.6.5/3! = 7.5 = 35 4!/2!2! = 4.3.2!/2!2! = 4.3/2! = 2.3 = 6 2!/1!1! = 2 1!/1!0! = 1 35....
6.8 = 4.x
48 = 4x
48/4 = x
12 = x
TIDAK