In the following question, four number pairs are given. The number on the left side of (−) is related to the number on the right side of (−) with some Logic/Rule/Relation. Three are similar on the basis of the same Logic/Rule/Relation. Select the odd one out from the given alternatives.
- A3 - 9
- B5 - 25
- C7 - 49
- D10 - 101
Solution & Step-by-step Explanation
Let's check the relation between the numbers in each pair:
Option A: 3→3
2
=9
Option B: 5→5
2
=25
Option C: 7→7
2
=49
Option D: 10→10
2
+1=100+1=101
In options A, B, and C, the second number is the perfect square of the first number. In option D, the pattern changes to x
2
+1. Thus, option D is the odd one out.
Option A: 3→3
2
=9
Option B: 5→5
2
=25
Option C: 7→7
2
=49
Option D: 10→10
2
+1=100+1=101
In options A, B, and C, the second number is the perfect square of the first number. In option D, the pattern changes to x
2
+1. Thus, option D is the odd one out.