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""".^(n-1)Cr+ """.^(n-1)C(r-1) is …………. ...

`""".^(n-1)C_r``+ """.^(n-1)C_(r-1)` is …………. .

A

`""^(n+1)C_r`

B

`""^(n-1)C_r`

C

`""^nC_r`

D

`""^nC_(r-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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