Question:
The sum of the first \( n \) terms of an arithmetic progression is \( 3n^2 + 5n \). What is the first term of the series?
The sum of the first \( n \) terms of an arithmetic progression is \( 3n^2 + 5n \). What is the first term of the series?
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For AP sum formulas, the first term is found by substituting \( n = 1 \).
Updated On: Mar 23, 2026
- 2
- 5
- 8
11
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The Correct Option is C
Solution and Explanation
Sum of first \( n \) terms, \( S_n = 3n^2 + 5n \).
First term = \( S_1 = 3(1)^2 + 5(1) = 3 + 5 = 8 \).
Thus, the answer is 8.
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