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UPSC NDA 2 2016 Mathematics Solved Paper

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Question : 29

Total: 120

If xln(

).yln(xz)2.zln(

)=y4‌lny for any x > 1 ,y > 1 and z > 1, then which one of the following is correct?

In y is the GM of ln x, In x, ln x and ln z
In y is the AM of in x, In x, ln x and ln z
In y is the HM of ln x, In x and ln z
In y is the AM of in. In x, ln z and ln z

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