If a<sup>x</sup>= b, b<sup>y</sup>=c and c<sup>z</sup>=a, then the value of xyz ?

1. If a^x= b, b^y=c and c^z=a, then the value of xyz ?

[BB Assistant Director-2014 : 2014]

1. 0

2. 1

3. 1/abc

4. abc

Answer

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