Resposta:

9!/7!​ = 9*8 * 7!/7!  =9*8 * 1  =9*8

=72

Verified answer

Resposta: 72

[tex]\frac{9!}{7!}= \frac{9*8*7*6*5*4*3*2*1}{7*6*5*4*3*2*1} = \frac{362.880}{5040} =72[/tex]