Question

quantos anagramas tem a palavra gincana?

Answer 1

n = 7!/4!3!
n = 7.6.5.4!/4!3.2.1
n = 210/6
n = 35

Answer 2

PERMUTAÇAO REPITIDA  .gincana  7 letras.

P7 ² ²=7
       $\frac{7}{2!.2!}$ ⇒7$\frac{7.6.5.4.3.2!}{2.1! 2!}$.7.6.5.4.3.2!⇒$\frac{5040}{2}$⇒2520.