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Sum of n Terms

23. If the su...

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23. If the sum of first n terms of an AP is 4n-nxn , what is the first term ( that is s1 ) ? What is the sum of first two terms? What is the second term? Similarly find the 3rd , the 10 the and the nth terms

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If the sum of the first n terms of an AP 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 $3^{r d}$ , the $10^{t h}$ and the $n^{t h}$ terms.

If the sum of the first n terms of an AP is 4n-n2 what is the first term that is S1 ? What is the sum of first two terms? What is the second term similarly find the third and 10th and nth terms

Q. Question 11
If the sum of the first n terms of an AP is

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4 n - n^{2}

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