(i) The sum of the first n terms of an AP is `((5n^(2))/(2) + (3n)/(2) – InterviewSolution

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1.	(i) The sum of the first n terms of an AP is `((5n^(2))/(2) + (3n)/(2))`. Find the nth term and the 20th term of this AP. (ii) The sum of the first n terms of an AP is `((3n^(2))/(2) + (5n)/(2)).` Find its nth term and the 25th term.
Answer» Correct Answer - `(i) T_(n) = (5n-1), T_(20) = 99 (ii) T_(n) = (3n +1), T_(25) = 76`

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