Question

Calcule : 11! + 9!
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10!

Answer 1

$\frac{11! + 9!}{10!} = \frac{11!}{10!} + \frac{9!}{10!}$

$\frac{11 \times 10!}{10!} + \frac{9!}{10 \times 9!}$

$11 + \frac{1}{10}$

$\frac{111}{10}$