If aₙ = 2n + 5, then a₁, a₂, a₃ are
A2, 4, 6
B1, 3, 5
C7, 9, 11
D5, 7, 9
Answer & Solution
Correct answer: C. 7, 9, 11
Substitute n = 1, 2, 3: a₁ = 7, a₂ = 9, a₃ = 11. This is an AP with first term 7 and common difference 2.
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