If A is a 2×2 non-singular matrix with |A| = 10, find |adj A|.
If A is a 2×2 non-singular matrix with |A| = 10, find |adj A|.
- A. 10
- B. 100
- C. 1
- D. 1/10
Answer: A) 10
Explanation: For a 2×2 matrix, |adj A| = |A|^(2-1) = |A|¹ = 10.
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