Matrices - Introduction & Types

Grade 12 Maths — Matrices - Introduction & Types: 25 practice questions with instant scoring and explanations.

1. A matrix with m rows and n columns is called:
2. Which of the following is a square matrix?
3. A matrix with all elements equal to zero is called:
4. The diagonal matrix where all diagonal elements are 1 is called:
5. A matrix where all elements below the main diagonal are zero is called:
6. A symmetric matrix A satisfies:
7. An identity matrix of order 2 is:
8. The order of a matrix A is 3 × 4. The order of A^T is:
9. A matrix in which every element is the same scalar k is called:
10. A skew-symmetric matrix A satisfies:
11. Which of the following matrices is diagonal?
12. A column matrix has dimensions:
13. A row matrix has dimensions:
14. The element in the i-th row and j-th column of matrix A is denoted as:
15. A rectangular matrix is one where:
16. The main diagonal of a matrix consists of elements:
17. A matrix where the transpose equals the negative of the original is:
18. If A is a 2 × 3 matrix and B is a 3 × 2 matrix, then AB is:
19. A matrix A is idempotent if:
20. The trace of a square matrix is:
21. A matrix A is involutory if:
22. A nilpotent matrix A satisfies:
23. An upper triangular matrix has the form:
24. If A is a 2 × 3 matrix, then AA^T has order:
25. Order of matrix [[1,2,3],[4,5,6]] is: