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Question

If x,y,z are in A.P., then 3x3y3zare in :


  1. A.P.

  2. G.P.

  3. H.P.

  4. None


Solution

The correct option is B

G.P.


3x × 3z = 3(x+z) = 3(2y) =  (3y)2

⇒  3x, 3y, 3z are in G.P.

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