Question

Calcule número binominal:

Answer 1

$\Large\boxed{\begin{array}{l}\tt a)\\\displaystyle\sf\binom{5}{2}=\dfrac{5\cdot4}{2\cdot1}=10\\\\\tt b)\\\displaystyle\sf\binom{5}{3}=\binom{5}{2}=10\\\\\tt c)\\\displaystyle\sf\binom{9}{0}=1\end{array}}$