Prove that for positive integers and with .

MATHEMATICS · Subjective · CBSE · Mathematics · Binomial Theorem · Binomial Theorem

Problem

Prove that

{}^{n}C_{r}+{}^{n}C_{r-1}={}^{\,n+1}C_{r}

for positive integers

n

and

r

with

n\ge r\ge1

.

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