Resposta :

[tex] \frac{8!5!}{6!3!} [/tex] = [tex] \frac{8.7.6!5.4.3!}{6!3!} [/tex]
= 8.7.5.4 = 1120
[tex] \frac{8! . 5!}{6! . 3!} = \frac{8 . 7 . 6! . 5 . 4 . 3!}{6! . 3!} = 8 . 7 . 5 . 4[/tex]

Outras perguntas