UPTET Feb 2014, q141

0. If a^x = b, b^y = c and c^z = a, then the non-zero value of (xyz) is

Answer
Comment
Array

Option : A
Explanation : a = c^z = (b^y)^z = b^yz = (a^x)^yz
⇒ a = a^xyz
∴ xyz = 1.

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