Question

calcule o valor da expressão.
a)6!+2!/2.5!:
b)20!/18!:
c)8!2!/7!:
d)6!/5!:
e)5!/6!:

Answer 1

a)6!+2!/2*5!
720+2/2*5
720+1*5
720+5
=725

b)20!/18!
20*19*18!/18!
20*19
=380

c)8!2!/7!
8!*2/7!
8!*2/7!
8*7!*2/7!
8*2
=16

d)6!/5!
6*5!/5!
=6

e)5!/6!
5!/6*5!
=1/6