Leader of the group


For all positive integers n and k with n>=k, we have following equality:

nCk+nC(k-1)=(n+1)Ck

Prove equality using words. As a hint, suppose that there are n+1 people, and one of them has already been assigned to be leader of the group.

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Basic Statistics: Leader of the group
Reference No:- TGS0870215

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