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Mathematics
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Deep theorem with trivial proof
Dec 7, 2016
2
How to prove Vandermonde's Identity: $\sum_{k=0}^{n}\binom{R}{k}\binom{M}{n-k}=\binom{R+M}{n}$?
Oct 5, 2016
2
Combinatorics: How many distinct ways can a Ford, Chevy, Toyota, and VW go thru three distinct toll booths? NB: Order of going thru matters
Jun 5, 2017