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If the positive integers a, b, c, d are in AP, then the numbers a b c, a b d, a c d, b c d are in

Options

  1. AHP
  2. BAP
  3. CGP
  4. DNone of the above

Correct answer

A. HP

Step-by-step solution

a, b, c, d are in A.P. then, 1 a , 1 b , 1 c , 1 d are in H.P. or, a b c d a , a b c d b , a b c d c , a b c d d are in H.P. or, b c d, a c d, a b d, a b c are in H.P.

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