1.

Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.1. 12 : 152. 17 : 193. 11 : 134. 21 : 23

Answer» Correct Answer - Option 1 : 12 : 15

The logic followed here is:

  • Second number - 2 = First number
  1. 15 - 12 = 3
  2. 19 - 17 = 2
  3. 11 - 13 = 2
  4. 23 - 21 = 2
  • In options 2, 3, and 4, the difference is 2 but in option 1 the difference is 3 which is different from others.

Hence, "option 1" is the correct answer.


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