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Welcome to the Sequences,Sums and Matrices MCQs Page

Dive deep into the fascinating world of Sequences,Sums and Matrices with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Sequences,Sums and Matrices, a crucial aspect of Discrete Mathematics. In this section, you will encounter a diverse range of MCQs that cover various aspects of Sequences,Sums and Matrices, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Discrete Mathematics.

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Check out the MCQs below to embark on an enriching journey through Sequences,Sums and Matrices. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Discrete Mathematics.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Sequences,Sums and Matrices. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Sequences,Sums and Matrices MCQs | Page 7 of 12

Explore more Topics under Discrete Mathematics

Q61.
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

Discuss
Answer: (a).Identity matrix
Q62.
A symmetric matrix is a one in which?

a.

All diagonal elements are zero

b.

All diagonal elements are 1

c.

A = Aᵀ

d.

A = -Aᵀ

Discuss
Answer: (c).A = Aᵀ
Q63.
An anti-symmetric matrix is a one in which?

a.

All diagonal elements are zero

b.

All diagonal elements are 1

c.

A = Aᵀ

d.

A = -Aᵀ

Discuss
Answer: (d).A = -Aᵀ
Q64.
A matrix having one row and many columns is known as?

a.

Row matrix

b.

Column matrix

c.

Diagonal matrix

d.

None of the mentioned

Discuss
Answer: (a).Row matrix
Q65.
A matrix having many rows and one column is known as?

a.

Row matrix

b.

Column matrix

c.

Diagonal matrix

d.

None of the mentioned

Discuss
Answer: (b).Column matrix
Q66.
The trace of the matrix is defined as _______

a.

Sum of all the elements of the matrix

b.

Sum of all the elements of leading diagonal of matrix

c.

Sum of all non-zero elements of matrix

d.

None of the mentioned

Discuss
Answer: (b).Sum of all the elements of leading diagonal of matrix
Q67.
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

Discuss
Answer: (a).Upper triangular matrix
Q68.
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

Discuss
Answer: (b).Lower triangular matrix
Q69.
Two matrix can be added if _______

a.

rows of both the matrices are same

b.

columns of both the matrices are same

c.

both rows and columns of both the matrices are same

d.

number of rows of first matrix should be equal to number of column of second

Discuss
Answer: (c).both rows and columns of both the matrices are same
Q70.
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

Discuss
Answer: (a).Orthagonal matrix
Page 7 of 12

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