Answer: 15.
- A 15
- B 8
- C 2
- D 53
Correct answer: A. 15
Explanation: Multiplicative property of determinants: det(AB) = det(A) x det(B) = 5 x 3 = 15.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.