If the sum of the first n terms of an Ap is 4n – n^2 what is first term? what is the sum of first two terms? what is the second term? similarly find the 3rd and 10th and nth terms.

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If the sum of the first n terms of an Ap is 4n – n^2 what is first term? what is the sum of first two terms? what is the second term? similarly find the 3rd and 10th and nth terms.
04
Oct
If the sum of the first n terms of an Ap is 4n – n^2 what is first term? what is the sum of first two terms? what is the second term? similarly find the 3rd and 10th and nth terms. If the sum of the first n terms of an Ap is 4n - [...]
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