1. Find the sum of each of the following APs:(i) 2, 7, 12, 17, ....... – InterviewSolution

1.	1. Find the sum of each of the following APs:(i) 2, 7, 12, 17, ................to 19 terms.
Answer» sum of Ap =n/2[2a+(n-1)d]givenno. of terms =19first term or "a"=2common difference =5now, sum of ap= 19/2[22+(19-1)5]=>19/2[4+(18)5]=>19/2[4+90]=>19/294=>19*47=>893

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