Mathematics, 29.10.2020 14:00 devo7420
If the sum of first 7 terms of an A. P is 49 and the sum of first 17 terms is 289 find the sum of first 30 term
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If the sum of first 7 terms of an A. P is 49 and the sum of first 17 terms is 289 find the sum of fi...
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