(3) 10a 20. If S, denotes the sum to n terms of an A.P. whoseirst term – InterviewSolution

1.	(3) 10a 20. If S, denotes the sum to n terms of an A.P. whoseirst term is a and common difference is d, then3S 2 3Sn1S is equal ton +(2) -a(4) 2a
Answer» options are wrong answer is 6

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