Question

Calcule o valor ou simplifique

0! + 1 =

7! - 5! =

5 . 3 =

9!
— =
10!

Answer 1

1. 0!=1, 1+1=2

2. 7!=7x6x5!, 7x6x5!-5!=7x6=42

3. 5x3=15

4. 10!=10x9!, 9!/10x9!=1/10