Sum of first n terms of the series 1 + ...

Sum of first n terms of the series `1 + 3 + 5 + 7 + .....` is 100. If 3 consecutive terms be removedfrom these n terms then sum of the remaining terms and sum of original terms are in the ratio `17:20`. Which of the following is/are correct.

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Sum of first n terms of the series `1 + 3 + 5 + 7 + .....` is 100. If 3 consecutive terms be removedfrom these n terms then sum of the remaining terms and sum of original terms are in the ratio `17:20`. Which of the following is/are correct.

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