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If x is a positive real number different...

If x is a positive real number different from 1 such that `log_(a)x,log_(b)x, log_(c )x` are in A.P., then

A

`b=(a+c)/(2)`

B

`b=sqrt(ac)`

C

`c^(2)=(ac)^(log_(a)b)`

D

None of (A), (B), (C ) are correct

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