How many terms of an A.P. must be taken for their
sum to be equal to 200 if its third term is 16 and the
difference between the 6th and the 1stterm is 30?
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Explanation: If the difference between the 6th and the 1st term is 30, it means that the common difference is equal to 6. Since, the third term is 16, the AP would be 4, 10, 16, 22, 28, 34, 40, 46 and the sum to 8 terms for this AP would be 200.
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