2015 · Q11
The difference between the squares of two consecutive odd integers is always divisible by
Elementary MathematicsNumber System
- A3
- B7
- C8
- D16
Explanation
For consecutive odd integers 2n+1, 2n+3: (2n+3)² − (2n+1)² = 8n + 8 = 8(n+1), always divisible by 8 (option C).