Question

Simplifique a expressão

Answer 1

a) 8!/9!= 8!/9•8!= 1/9

b) 6!/5!•2!=6•5!/5!•2!= 6/2=3

C) 8!/4!•6!= 8•7•6!/4!•6!=8•7/4•2•3•2•1=7/6