Question

15! 13! ÷ 14! 12! resposta????

12! 3! ÷ 15! respostas?​

Answer 1

Resposta:

1) 195

2) 1/455

Explicação passo-a-passo:

$1) \frac{15!13!}{14!12!} =\frac{15.14! 13.12!}{14!12!} =15.13=195\\\\2) \frac{12!3!}{15!}=\frac{12!3!}{15.14.13.12!} =\frac{3.2.1}{15.14.13} =\frac{1}{5.7.13} =\frac{1}{455}$