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

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 : • Combinatorial Proofs

[@rachel_yeah]

Thank you for this video! understood it perfectly thanks to you

[@traderjm9711]

you're cooking me sreyas

[@lamalamalex]

Can you prove that n! = sum(C(n,j)*j^(n)*(-1)^(n-j)) from j=0 to n

[@shreyghai8508]

nice!!

[@javariatanveer9007]

Thank u so much sir.

[@learnwithsreyas1777]

Thank you!

[@victoryaldasetiawan4884]

I thing, for all n can explain to 2*C(n+1, 2)

[@javariatanveer9007]

SIR DO U HAVE INSTA PAGE?

[@learnwithsreyas1777]

Currently, not active in instagram. Will let you know when becoming active in instagram.