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If the sum of the first n terms of an A.P. is `4n - n ^(2),` what is the first term (that is `S _(1)`) ? What is the sum of first two terms? What is the second term ? Similarly, find the `3 ^(rd),` the `10^(th)` and ten `n ^(th)` terms.

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The correct Answer is:
`2 - 2n `
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OSWAL PUBLICATION-ARITHMETIC PROGRESSIONS -NCERT CORNER (EXERCISE-5.3)
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