MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Discrete Mathematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For matrix A if AAT = I, I is identity matrix then A is? |
| A. | Orthagonal matrix |
| B. | Nilpotent matrix |
| C. | Idempotent matrix |
| D. | None of the mentioned |
| Answer» B. Nilpotent matrix | |
| 2. |
A square matrix A = [aij ]nxn, if aij = 0 for i < j then that matrix is known as _______ |
| A. | Upper triangular matrix |
| B. | Lower triangular matrix |
| C. | Unit matrix |
| D. | Null matrix |
| Answer» C. Unit matrix | |
| 3. |
A square matrix A = [aij ]nxn, if aij = 0 for i > j then that matrix is known as _______ |
| A. | Upper triangular matrix |
| B. | Lower triangular matrix |
| C. | Unit matrix |
| D. | Null matrix |
| Answer» B. Lower triangular matrix | |
| 4. |
If a matrix A = [A11 A12 A1n A21 A2n An1 An2 Ann], order(nxn) Aii = 1, Aij = 0 for i j. Then that matrix is known as ________ |
| A. | Identity matrix |
| B. | Null matrix |
| C. | Singular matrix |
| D. | None of the mentioned |
| Answer» B. Null matrix | |