Question

me ajuda!!!!!!!!!!!!!! ​

Answer 1

Resposta:

1. 90

2. 56

3. 96/35

Explicação passo a passo:

1.

$\frac{10!}{8!} \\\frac{10*9*8!}{8!} \\10 * 9 = 90$

2.

$\frac{8!}{5!3!}\\\frac{8*7*6*5!}{5!3!}\\\frac{8*7*6}{3!}\\\frac{8*7*6}{6}\\8*7 = 56$

3.

$\frac{4!4!4!}{7!}\\\frac{4!4!4!}{7*6*5*4!} \\\frac{4*3!4!}{7*6*5} \\\\frac{4*4!}{7*5} \\\frac{96}{35}$