Resposta:
Explicação passo a passo:
a) 7! -4! = 7.6.5.4.3.2.1 - 4.3.2.1 = 5040 - 24 = 5016
[tex]b)\frac{10!}{6!} = \frac{10.9.8.7.6!}{6!}= 10.9.8.7=2250\\[/tex]
[tex]c)\frac{8!+5!}{3!}=\frac{ 8.7.6.5.4.3.2.1+5.4.3.2.1}{3.2.1}=\frac{40320+120}{6} =\frac{40440}{6}=6740[/tex]
