alleryStart learning →Find the sum of the first 15 terms of the AP 2, 5, 8, ...
A335
B350
C340
D345
Answer & Solution
Correct answer: D. 345
With a = 2 and d = 3, S15 = 15/2 x (4 + 14 x 3) = 15 x 23 = 345.
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