Question

A resposta desse calculo

Answer 1

$C^{P}_{n} = \frac{n!}{P!(n-P)!}\\ \\C^{P}_{n} = \frac{12!}{2!(12-2)!}\\\\\\C^{P}_{n} = \frac{12!}{2!.10!}\\\\\\C^{P}_{n} = \frac{12.11.10!}{2.1.10!}\\\\\\C^{P}_{n} = \frac{12.11}{2}\\\\\\C^{P}_{n} = \frac{132}{2}$

∴ A quantidade de maneiras é 66.