Find the odd one out:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 10 # 5 = 5.
Check the rule:
2. 20 # 4 = 5 → 20 ÷ 4 = 5
3. 25 # 5 = 25 → 25 ÷ 5 = 5
4. 15 # 3 = 5 → 15 ÷ 3 = 5
But 1. 10 # 5 = 5 → 10 ÷ 5 = 2 ≠ 5
Hence, option 1 is odd one out.