Question

O valor de 12! sobre 8! é;

Answer 1

Definição de fatorial:

$\boxed{\boxed{n!=\prod\limits_{k=1}^{n}k=n\cdot(n-1)\cdot(n-2)\cdot(n-3)\cdot(n-4)\cdot...\cdot3\cdot2\cdot1}}$

$n!=n\cdot(n-1)!=n\cdot(n-1)\cdot(n-2)!=...$
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$\dfrac{12!}{8!}=\dfrac{12\cdot11\cdot10\cdot9\cdot8!}{8!}\\\\\\\dfrac{12!}{8!}=12\cdot11\cdot10\cdot9\\\\\\\boxed{\boxed{\dfrac{12!}{8!}=11880}}$

Answer 2

12!/8! 
9x10x11x12= 11880 
I think.