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A series whose n^(th) term is (n/x), th...

A series whose `n^(th)` term is `(n/x)`, then sum of r terms will be

A

`{(r(r+1))/(2x)}+ry`

B

`{(r(r-1))/(2x)}`

C

`{(r(r-1))/(2x)}-xy`

D

`{(r(r+1))/(2x)}-rx`

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The correct Answer is:
A
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