Question

7fatorial×11fatorial÷9fatorial×5fatorial

Answer 1

$\cfrac{7! \cdot 11!}{9! \cdot 5!}\\\\ = \cfrac{7 \cdot 6 \cdot 5! \cdot 11 \cdot 10 \cdot 9!}{9! \cdot 5!}\\\\= 7 \cdot 6 \cdot 11 \cdot 10\\= 4620$