Answer: |A| |B|.
- A |A| |B|
- B |A| + |B|
- C |A| − |B|
- D |A| / |B|
Correct answer: A. |A| |B|
Explanation: The determinant of a product equals the product of the determinants: |AB| = |A||B|.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.