📐 Mathematics · Determinants · JEE

The value of the determinant [[4, 2], [1, 3]] is:

Answer: 10.

Correct answer: A. 10

Explanation: (4)(3) − (2)(1) = 12 − 2 = 10.

Concept context

Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.