📐 Mathematics · Determinants · JEE

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

Answer: 5.

Correct answer: A. 5

Explanation: 2·4 − 1·3 = 8 − 3 = 5.

Concept context

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