![]() ![]() The sum of n terms of the given AP is S n = n/2 (2a+(n−1)2a). The first term is a and the common difference is 2a. What is the Sum of First n Terms of an AP: a, 3a, 5a. The formula to find the sum of n terms in AP is S n = n/2 (2a+(n−1)d), in which a = first term, n = number of terms, and d = common difference between consecutive terms. What is the Commonly Used Sum of AP Formula? Here, a = a 1 = the first term, d = the common difference, n = number of terms, a n = n th term, S n = the sum of the first n terms. The sum of n terms of an AP can be found using one of the following formulas: must be taken to give a sum of 636?įAQs on Sum of n Terms of an AP What is the Sum of n Terms of an AP Formula?
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