nCr

This page lists questions and answers that were posted by visitors named nCr.

Questions

The following questions were asked by visitors named nCr.

prove nC(r-1) + (n+1)C(r-1) + (n+2)C(r-1)+ ... +(n+k)C(r-1) = (n+k+1)Cr
12 years ago

Answers

The following answers were posted by visitors named nCr.