Answer: −2.
- A −2
- B 2
- C 10
- D −10
Correct answer: A. −2
Explanation: (1)(4) − (2)(3) = 4 − 6 = −2.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.
📐 Mathematics · Determinants · JEE