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If a, b, c are in GP, then the equations...

If `a, b, c` are in `GP`, then the equations `ax^2 +2bx+c = 0` and `dx^2 +2ex+f =0` have a common root if `d/a , e/b , f/c `are in

A

A.P.

B

G.P.

C

H.P.

D

No definite sequence

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The correct Answer is:
A
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