Discrete Math: 01. Binomial Coefficients in Pascal's Triangle

You may have used Pascal's Triangle to find the coefficients of (a+b)^2 or (a+b)^3. In this video I provide a proof for why the coefficients in the expansion (a+b)^n are the binomial coefficients nCk which are found in Pascal's Triangle.
--An introduction to Discrete Math by Dr. Sarada Herke.

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