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Let a 1 ,a 2 ,a 3 ,....,a n be n positive consecutive terms of an arithmetic progression. If d > 0 is its common difference, then ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + + + + + + − ∞ → n 1 n 3 2 2 1 n a a 1 ... a a 1 a a 1 n d lim is-

1. d 1
2. d
3. 1
4. 0 CAREER POINT CAREER POINT Ltd., CP Tower, IPIA, Road No.1, Kota (Raj.), Ph: 081-47250011 www.careerpoint.ac.in 8 JEE Main Online Paper

Correct answer: 1

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