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Let \(A\) and \(B\) be two square matrices each of order 3. If \(|AB| = 21\) and \(|A^{-1}| = -7\), then the value of \(|B|\) is equal to
Let \(A\) and \(B\) be two square matrices each of order 3. If \(|AB| = 21\) and \(|A^{-1}| = -7\), then the value of \(|B|\) is equal to
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Determinant properties like \(|AB| = |A||B|\) apply to square matrices of any order. The order "3" mentioned in the question is additional information but doesn't change the calculation here.
Updated On: Jun 24, 2026
- 3
- -3
- 147
- -63
- -147
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The Correct Option is
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