If A and B are square matrices of the same order such that |A| = 3 and |B| = 4, then |AB| is:
If A and B are square matrices of the same order such that |A| = 3 and |B| = 4, then |AB| is:
- A. 7
- B. 12
- C. 3/4
- D. 81
Answer: B) 12
Explanation: By properties of determinants, |AB| = |A||B| = 3 × 4 = 12.
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