Question

2)Simplifique. a) 7!/4! b) (7!-5!)/4! c) 8!/5! d) 9!/(3!6!) -​

Answer 1

□OLÁ! TD BEM?

2) A) 7!/4!

7 . 6 . 5 . 4! /4!

7 . 6 . 5 = 210

B) (7! - 5!)/4!

7 . 6 . 5! - 5! /4!

42 . 5! - 5 /4!

41 . 5! /4!

41 . 5 . 4! /4!

41 . 5 = 205

C) 8!/5!

8 . 7 . 6 . 5! /5!

8 . 7 . 6 = 336

D) 9!/(3!6!)-

9 . 8 . 7 . 6! /3! . 6!

9 . 8 . 7 /3!

504 /6 = 84