Question

Calcule o valor ou simplifique:
a) 5!
b)8!/4!
c)5!/3! 6!/4!
d) (n+1)/n!
e)n!/(n+1)!
OBS: o / é pra indicar sobre !

Answer 1

a) 5!= 5×4×3×2×1=120
b) 8!/4!= 8x7x6x5x4!/4!= 8x7x6x5=1660
c) 5!/3!= 5x4x3!/3!= 5x4= 20
6!/4!= 6x5x4!/4!= 6x5= 30
d) (n+1)!/n!= (n+1)xn!/n!=n+1
e) n!/(n+1)!= n!/(n+1)xn!= 1/(n+1)

Answer 2

Olha colega, problema bastante simples.
a) 5! = 5.4.3.2.1 = 120
b) 8!/4! = 8.7.6.5.4!⇒
                  4!
b) 8!/4! = 1680

c)5!. 6!⇒
  3!   4!

5.4.3! . 6.5.4!⇒
   3!        4!

20.30 = 600

d) (n + 1)!⇒
        n!

(n + 1).n!⇒ (n + 1)
     n!

e) n!⇒
(n + 1)!

n!⇒
(n + 1).n!

   1   
(n + 1)

Espero tê-la ajudado
Bons Estudos
kélémen