Consider the following pairs of numbers. Based on the odd and even nature of their sum or difference, identify the pair that does not follow the same pattern as the others.
Show answer & explanation
Correct answer: D
Explanation
Check sum of each pair:
1) 13 + 1 = 14 → Even
2) 24 + 12 = 36 → Even
3) 14 + 4 = 18 → Even
4) 18 + 9 = 27 → Odd
Only Option 4 gives an odd sum, while others give even sum.
But check difference:
1) 13 − 1 = 12 → Even
2) 24 − 12 = 12 → Even
3) 14 − 4 = 10 → Even
4) 18 − 9 = 9 → Odd
So, Option 4 differs in both sum and difference pattern.