JEE Mathematics · Easy

Matrices and Determinants: Determinant 2×2 MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Determinant 2×2EasyQuestion 250003

Question

The determinant of [[3, 1], [2, 4]] is:
  1. A
    10
    Correct
  2. B
    14
  3. C
    2
  4. D
    −10

Correct answer

10

Explanation

det = 3×4 − 1×2 = 12 − 2 = 10.