If a₁, a₂, … are in A.P., then 1/(√a₁ + √a₂) + 1/(√a₂ + √a₃)... — Quantitative Ability 2019

Question 390 Quantitative Ability 2019 Medium MCQ +3.00 marks · -1.00 negative

If a₁, a₂, … are in A.P., then 1/(√a₁ + √a₂) + 1/(√a₂ + √a₃) + … + 1/(√aₙ + √aₙ₊₁) is equal to

A. N/(√a₁ + √aN₊₁) B. n/(√a₁ + √aₙ₊₁) C. (n − 1)/(√a₁ + √aₙ₋₁) D. (n − 1)/(√a₁ + √aₙ)

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