The value of nCr + 2 nCr – 1 + nCr – 2, 2 ≤ r ≤ n, is ________ – InterviewSolution

1.	The value of nCr + 2 nCr – 1 + nCr – 2, 2 ≤ r ≤ n, is ____________.
Answer» The value of ⁿC_r + 2 ⁿC_r _{– 1} + ⁿC_r _{– 2}, 2 ≤ r ≤ n, is ____________.

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