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English and Logical Reasoning Prep GuideLogical ReasoningClassification

Directions: In this type of questions, certain pairs/groups of numbers are given out of which all except one are similar in some manner while one is different. The numbers in these similar pairs/groups may have the same property or may be related to each other according to the same rule. The candidate is required to choose the odd pair/group. Which Pair does NOT belong with the others?

Options

  1. A21 – 49
  2. B24 – 64
  3. C25 – 54
  4. D81 – 36

Correct answer

C. 25 – 54

Step-by-step solution

This is the only pair in which the two numbers have no common factor. Hence, option C is correct.

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