# Math Bite: Finding $$e$$ in Pascal's Triangle

by Brothers, Harlan J.

If $$s_n$$ is the product of the entries in the $$n$$th row of Pascal's Triangle and $$r_n = s_n/s_{n-1}$$, then a proof is given of the fact that $$\lim_{n \rightarrow \infty} r_n/r_{n-1} = e$$.