Question:If` x = y^a, y = z^b` and `z = x^c`, then the value of abc is : 

A 4 
B 3 
C 2 
D 1 

+ Answer
D 

+ Explanation
`x = y^a = (z^b)^a`

` = z^ab = (x^c)^ab = x^(abc)`

`:. abc = 1`

+ Report

Irin Moni

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