if the term of first 7 terms of an ap is 119 and that of the first 17 terms is 714 . find the sum of its 24 terms.
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Given : If the sum of first 7 terms of an AP is 119 and that of the first 17 terms is 714. To find : The sum of its first n terms? Now, subtracting (1) from (2), we get. Substituting the value d = 4 in equation (2), we get.
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