Identify the odd pair:
Show answer & explanation
Correct answer: B
Explanation
Pairs:
13–17, 24–28, 19–23, 29–31
13 & 17 → both prime
19 & 23 → both prime
29 & 31 → both prime
24 & 28 → not prime
Pattern:
All pairs contain prime numbers, except 24-28
Hence, the correct answer is option 2.