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AP EAMCET2007MathematicsSequences and Series

If a, b, c are in AP, b-a, c-b and a are in GP, then a: b: c is

Options

  1. A1: 2: 3
  2. B1: 3: 5
  3. C2: 3: 4
  4. D1: 2: 4

Correct answer

A. 1: 2: 3

Step-by-step solution

Given, that, 2 b=a+c and (c-b)^2=(b-a) a aligned & (b-a)^2=(b-a) a & b=2 a & c=3 a & a: b: c=1: 2: 3 & aligned

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