SUM OF FIRST 7 TERMS OF AN A.P. IS 49 AND THAT OF SUM OF 17 TERMS OF A.P. IS 289.FIND SUM OF FIRST N TERMS
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Arithmetic Progressions. If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms. Here S7 = 49, S17 = 289 Let 'a' be the first term and 'd' the common difference. ... Here the total istance the compatitar has to sum = 370 m.
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