Explore topic-wise MCQs in Discrete Mathematics.

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
Discussion
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
Discussion
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
Discussion
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
Discussion