00 ProbabilityExample of Combinatorial Identities Combinatorial Identity #1 Let us prove that \[\left( \begin{matrix} m+n \\ n \end{matrix} \right) = \sum\limits_{k=0}^{\infty }{\left( \begin{matrix} m \\ k \end{matrix} \right)\left( \begin{matrix} n... By AdminMyMathAnswer 3 years ago3 years ago