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Combinatorial Proof : C(2n,2) = 2*C(n,2) + n^2 | Combinatorial Proofs-3

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Apr 17, 2021
3:29

In this video, we discuss the combinatorial proof for why 2n choose 2 is same as 2 * n choose 2 + n square. A combinatorial proof is given for the identity C(2n,2) = 2*C(n,2) + n^2 . Playlist : https://youtube.com/playlist?list=PL6ZJ9odizzxUf7geCDjupgPTG0Jp4NtM4

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Combinatorial Proof : C(2n,2) = 2*C(n,2) + n^2 | Combinatorial Proofs-3 | NatokHD