Sn to anMediumQuestion 210032
Question
If Sₙ = 3n² + 2n, then a₁ is:
- A5Correct
- B6
- C4
- D3
Correct answer
5
Explanation
a₁ = S₁ = 3(1)²+2(1) = 5. Or: a₁ = S₁−S₀ = 5−0 = 5.
JEE Mathematics · Medium
Sequences and Series: Sn to an MCQ
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