Answer: 5.
- A 11
- B 5
- C 8
- D 3
Correct answer: B. 5
Explanation: det(A) = 2 x 4 - 3 x 1 = 8 - 3 = 5.
Element aij of matrix A sits at the intersection of row i and column j.
Concept context
Matrix operations, determinants, inverses, and solving linear systems