Question

Find the sum of the first 100 terms of the series 1 + 4 + 7 + 5 + 13 + 6?

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Answer 1

Answer:

The series can be clubbed into two Ap's,(1+7+13....) and (4+5+6...). So we can observe that the series can be taken as two AP's. Now, we can find sum of 50 terms of each ap formed.

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