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GATE 2025 XH2 (English) – Question 11

Reasoning and Comprehension · Quantitative reasoning · 1 mark · Multiple choice

Which one of the following numbers is odd one out?

31541 42651 53791 64871 75981

  1. 31541
  2. 42651
  3. 53791
  4. 75981

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Show answer and explanation

Correct answer: (C) 53791

Explanation

Each number should be 11110 more than the one before: $31541 + 11110 = 42651$, $42651 + 11110 = 53761$, $53761 + 11110 = 64871$, $64871 + 11110 = 75981$. The third number should be 53761 but is 53791, so it is the odd one out.