SSC JE Mechanical Engineering 2013

Instructions

In the following questions, select the one which different from the other three responses.

Question 15
Solution

The pattern observed in A,B,C is :
Reverse the digits of the first number in the pair, double the resulting number and we get the second number. 
17 --> 71 --> *2 --> 142

This is not the case in option D. Hence, odd one out. 

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