Question

halla el valor de B: B=8!-7!

Answer 1

Respuesta:

Explicación paso a paso:

1! = 1

2! = 1.2 = 2

3! = 1.2.3 = 6

4! = 1.2.3.4 = 24

5! = 1.2.3.4.5 = 120

Propiedad  n! = n(n-1)!

ejem   5! = 5(5-1)! = 5.24 = 120

B = 8! - 7! = 8(8-1)! - 7! = 8.7! -7! = 7!(8-1) = 7! . 7

B = 7. 7! = 7(7.6!) = 7.7(6.5!) = 7.7.6. 5! = 294 . 120

B = 35280