Question

Calcule o valor de n :

A) n! = 720

B) (n-4) !
————— = 6
(n-3)!

C) (n+5)!
—————— =10
( n +4 )!

Answer 1

Explicação passo-a-passo:

A)

n! = 720

n!= 6!

n= 6

B)

(n-4) !

————— = 6

(n-3)!

(n-4).(n-3)!/(n-3)!= 6

(n-4)= 6

n=6+4

n=10

C)

(n+5)!

———---- =10

( n +4 )!

(n+5).(n+4)!/(n+4)!= 10

(n+5)=10

n=10-5

n=5