1. Find the sum of the following APs:1) 2,7,12,..., to 10 terms. – InterviewSolution

1.	1. Find the sum of the following APs:1) 2,7,12,..., to 10 terms.
Answer» we know that sum of a.p =n/2(2a+(n-1)d=10(2×2+(10-1)5=10(4+45)=10×49=490

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