Answer: 6.
- A 6
- B 5
- C 0
- D 1
Correct answer: A. 6
Explanation: For a diagonal 2×2 matrix the determinant is the product of the diagonal: 2 × 3 = 6.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.