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""^nCr+2^nC(r+1)+""^nC(r+2) is equal to ...

`""^nC_r+2^nC_(r+1)+""^nC_(r+2)` is equal to `(2 le r le n)`

A

`2^nC_(r+2)`

B

`""^(n+1)C_(r+1)`

C

`""^(n+2)C_(r+2)`

D

none of these

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Verified by Experts

The correct Answer is:
C
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OMEGA PUBLICATION-PERMUTATIONS AND COMBINATIONS-Multiple Choice Questions (MCQs)
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