UPSC NDA 2 2016 Mathematics Solved Paper

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Question : 29 of 120
 
Marks: +1, -0
If xln(
y
z
)
.yln(xz)2
.zln(
x
y
)
=y4‌lny
for any x > 1 ,y > 1 and z > 1, then which one of the following is correct?
[NDA II 2016]
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