In the following questions consists of four options containing numbers or symbols. Three of these follow a particular pattern or belong to the same category based on a specific rule of classification. Select the one that does not belong to the group.
Show answer & explanation
Correct answer: C
Explanation
Find the difference between the two numbers in each option:
• (A) 7 − 3 = 4
• (B) 23 − 19 = 4
• (C) 11 − 5 = 6
• (D) 11 − 7 = 4
In all options except (C), the difference between the numbers is 4.
Therefore, (5, 11) is the odd one out.