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The sum of the numbers of the n^(th)...

The sum of the numbers of the `n^(th)` term of the series `(1) +(1+2) +(1+2+3) +(1 +2+3+4) +… (1 +2+3+….n)`

A

`"^(n+1)C_3`

B

`"^(n+1)C_2`

C

`"^nC_2`

D

`"^(n+2)C_3`

Text Solution

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The correct Answer is:
B
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