Question

algueeeem sabe ??
me ajudem

Answer 1

Combinação simples:

$C_{n,p}=\dfrac{n!}{p!(n-p)!} \\ \\ C_{10,4}=\frac{10!}{4!(10-4)!} \\ \\ C_{10,4}=\frac{10!}{4!6!} \\ \\ C_{10,4}=\frac{10\cdot9\cdot8\cdot7}{4\cdot3\cdot2} \\ \\ C_{10,4}=5\cdot3\cdot2\cdot7\\ \\ C_{10,4}=210$