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
- A18 : 108
- B23 : 138
- C20 : 80
- D26 : 156
Correct answer
C. 20 : 80
Step-by-step solution
In all other pairs, second number is 6 times the first. Hence, option C is correct.