Question Detail
Question
If the sum of the first n terms of an AP is given by S_n = 3n^2 + 5n, what is the common difference?
Correct Answer
Option A is the correct answer.
Detailed Explanation
For any AP, S_n = An^2 + Bn where the coefficient of n^2 is d/2. Thus d/2 = 3, which implies d = 6.
Hint
No hint available