How manyterms of the A.P. `9, 17 , 25 , dot`must betaken so that their – InterviewSolution

InterviewSolution

1.	How manyterms of the A.P. `9, 17 , 25 , dot`must betaken so that their sum is 636?
Answer» Correct Answer - 12 `4n^(2) + 5n -636 = 0 rArr 4n^(2) + 53n - 48n - 636 =0`

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