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If a,b, c are in G.P., then the equation...

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

A

A.P.

B

G.P.

C

H.P.

D

none of these

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The correct Answer is:
A
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