Arithmetic Progression of Combinations | for which values of n nC4, nC5 and nC6 are in ap

In this video I have solved a very interesting question which relates to combinatorial identity called combinations and arithmetic progression.
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[ssvyoganandh]

How you got that (n-5) =(n-5) (n-6)
(n-4) =(n-4) (n-5) (n-6)

[manishgajjar]

Really It's very simple method Thanks

[mohammedkhalid]

Useful and informative video di thank you.... 🥰

[piyushpandey]

Mam across 1/30 in place of 1 where come n-5

[aungsumansinhamaths]

Please tell which instrument u r using to write this??

[SpectronLight]

*Madam what is Ur EducationaL Qualification kindly don't ignore😔