Question

qual valor da expressão abaixo?

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Answer 1

$\frac{7!3!}{2!6!} =$

$\frac{7 \times 6 \times 5 \times 4 \times 3 \times2 ! \times3 !}{2! \times 6 \times5 !}$

$\frac{7 \times 5 \times 4 \times 3 \times3!}{4 \times 3!}$

$7 \times 3$

$21$