1.

If \[1,\ {{\log }_{y}}x,\ {{\log }_{z}}y,\ -15{{\log }_{x}}z\] are in A.P., then

A. \[{{z}^{3}}=x\]
B. \[x={{y}^{-1}}\]
C. \[{{z}^{-3}}=y\]
D. \[x={{y}^{-1}}={{z}^{3}}\]
E. All the above
Answer» F.


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