Question

Simplifique as expressões:
a) 8! : 9!
b) 2! :3!
C) 15! : 13!
d) 8! : (4!.6!)​

Answer 1

a) 8! : 9!

= 8! : (9 . 8!)

= 1 : 9

b) 2! :3!

= 2! : (3 . 2!)

= 1 : 3

C) 15! : 13!

= (15 . 14 . 13!) : 13!

= 15 . 14

d) 8! : (4!.6!)​

= (8 . 7 . 6!) : (4! . 6!)

= (8 . 7) : (4 . 3!)

= (2 . 7) : 3!