If A is a 3×3 matrix with |A| = 3, then |adj(adj A)| is:
If A is a 3×3 matrix with |A| = 3, then |adj(adj A)| is:
- A. 27
- B. 81
- C. 9
- D. 3
Answer: B) 81
Explanation: |adj A| = |A|² = 9. |adj(adj A)| = |adj A|² = 81.
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