Question

Simplifique a expressão:
a) (n+1)!/n!
b) n!/(n-1)!

Answer 1

a) (n + 1)!/n!

(n + 1) × n! / n!

n + 1

b) n!/(n - 1)!

n × (n - 1)! / (n - 1)!

n

n! = n × (n - 1)!