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An arithmetic progression has a first term a1 = 1 and a... | Mathematics MCQ #5 | Examora | Examora

Q5. An arithmetic progression has a first term a1 = 1 and a second term a2 = 5. Which of the following formulas represents the sum of the first n terms, Sn?

Mathematics — NUST Mock By Dogers 6 — Question 5 of 200

A. n(n+1)/2
B. (n+1)/2
C. (2n+1)/2
D. n(2n-1)

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