Question

calcule ou simplefique a) 6! b)7!/4! c)3!5!/4!6! d) n!/(n-2)! e) (n+1)!/(n+2)! f) (n+3)!·(n-1)!/(n-2)!(n+2)!

Answer 1

A) 6*5*4*3*2*1 = 720

B) 7*6*5 = 210

C) 1/4*6 = 24

D) n(n-1)

E) 1/(n+2)

F) (n+3)/(n-2)