If A is [[8, 5], [7, 6]], then A^121 - A^120 is
- A. 0
- B. 1
- C. 120
- D. 121
Answer: A. 0
Explanation: This usually implies A^120 (A - I). But likely it relates to Cayley Hamilton or specific property. Or maybe it's A^121 - A^120 * something? The question text in PDF is sparse. Wait, let's look at the options. Maybe zero matrix?