sum of 1st 7 terms is 49 and sum of 1st 17 terms is 289 find sum of first 10 terms please answer this fast
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It is easy
Sum of first 7 terms = 49 which means 7^2
Sum of first 17 terms = 289 which means 17^2
Sum of first 10 terms = 10^2 = 100
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