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.

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 8 of 12

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12

Group Theory

Q71.

Let A and B be two matrices of same order, then state whether the given statement is true or false.

A + B = B + A

True

False

May be True or False

Can't say

Discuss

Answer: (a).True

Q72.

Let A and B be two matrices of same order, then state whether the given statement is true or false.

AB = BA

True

False

May be True or False

Can't say

Discuss

Answer: (b).False

Q73.

Let A order(axb) and B order(cxd) be two matrices, then for AB to exist, correct relation is given by?

a = d

b = c

a = b

c = d

Discuss

Answer: (b).b = c

Q74.

Let A order(axb) and B order(cxd) be two matrices, then if AB exists, the order of AB is?

axd

bxc

axb

cxd

Discuss

Answer: (a).axd

Q75.

Let A=[aᵢⱼ ] be an mxn matrix and k be a scalar then kA is equal to __________

[kaᵢⱼ ]ₘₓₙ

[aᵢⱼ/k ]ₘₓₙ

[k² aᵢⱼ]ₘₓₙ

None of the mentioned

Discuss

Answer: (a).[kaᵢⱼ ]ₘₓₙ

Q76.

The matrix multiplication is distrbutive over matrix addition.

True

False

May be True or False

Can't say

Discuss

Answer: (a).True

Q77.

If for a square matrix A, A² = A then such a matrix is known as _________

Idempotent matrix

Orthagonal matrix

Null matrix

None of the mentioned

Discuss

Answer: (a).Idempotent matrix

Q78.

For matrix A, B.(A+B)ᵀ = Aᵀ + Bᵀ and (AB)ᵀ = AᵀBᵀ if the orders of matrices are appropriate.

True

False

May be True or False

Can't say

Discuss

Answer: (b).False

Q79.

For matrix A, B if A – B = O, where O is a null matrix then?

A = O

B = O

A = B

None of the mentioned

Discuss

Answer: (c).A = B

Q80.

All the diagonal elements of a skew-symmetric matrix is?

Any integer

Discuss

Answer: (a).0

Page 8 of 12

Welcome to the Sequences,Sums and Matrices MCQs Page

Sequences,Sums and Matrices MCQs | Page 8 of 12

Explore more Topics under Discrete Mathematics

Logics and Proofs

Sets and Functions

Algorithms

Number Theory and Cryptography

Induction and Recursion

Counting Theory

Discrete Probability

Relations

Graphs and Graphs Properties

Tree Properties

Boolean Algebra and Modeling Computations

Group Theory

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