21. Different from other 60,64,48,42
- A. 60
- B. 64
- C. 42
- D. 48
Check answer and explanation
Answer: 64
Explanation Reason: Alternatively, if focusing on divisibility: Verification: Thus, 64 is different based on both criteria. Odd One Out: 64 64 is a perfect square ( 8 2 = 64 8^2 = 64 ), while the other numbers ( 60, 48, 42 ) are not perfect squares. 64 is not divisible by 3, whereas 60, 48, and 42 are all divisible by 3. 60 ÷ 3 = 20 (Divisible by 3) 60 ÷ 3 = 20 (Divisible by 3) 48 div 3 = 16 48 ÷ 3 = 16 (Divisible by 3) 42 ÷ 3 = 14 (Divisible by 3) 64 ÷ 3 = 21.33 (Not divisible by 3)