The sum of the series a-(a+d)+(a+2d)-(a+...

The sum of the series `a-(a+d)+(a+2d)-(a+3d)+` up to `(2n+1)` terms is `-n d` b. `a+2n d` c. `a+n d` d. `2n d`

`-nd`

a+2nd

a+nd

2nd

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MARVEL PUBLICATION-SEQUENCES AND SERIES -MULTIPLE CHOICE QUESTIONS

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