We have the best collection of the Matrix MCQs and answer with FREE PDF. These Matrix MCQs will help you to prepare for any competitive exams like: BCA, MCA, GATE, GRE, IES, PSC, UGC NET, DOEACC Exams at all levels – you just have to practice regularly.

## Matrix MCQs

**1. If column-major order is used, how is the following matrix stored in memory?**

a b c

d e f

g h i

a) ihgfedcba

b) abcdefghi

c) cfibehadg

d) adgbehcfi

**Answer:** adgbehcfi

**2. Which of the following don’t use matrices?**

a) In solving linear equations

b) Image processing

c) Graph theory

d) Sorting numbers

**Answer:** Sorting numbers

**3. What is the order of a matrix?**

a) number of rows X number of columns

b) number of columns X number of rows

c) number of rows X number of rows

d) number of columns X number of columns

**Answer:** number of rows X number of columns

**4. Which of the following property does not hold for matrix multiplication?**

a) Associative

b) Distributive

c) Commutative

d) Additive Inverse

**Answer:** Commutative

**5. How do you allocate a matrix using a single pointer in C?(r and c are the number of rows and columns respectively)**

a) int *arr = malloc(r * c * sizeof(int));

b) int *arr = (int *)malloc(r * c * sizeof(int));

c) int *arr = (int *)malloc(r + c * sizeof(int));

d) int *arr = (int *)malloc(r * c * sizeof(arr));

**Answer:** int *arr = (int *)malloc(r * c * sizeof(int));

**6. Matrix A when multiplied with Matrix C gives the Identity matrix I, what is C?**

a) Identity matrix

b) Inverse of A

c) Square of A

d) Transpose of A

**Answer:** Inverse of A

**7. Which of the following is an advantage of matrices?**

a) Internal complexity

b) Searching through a matrix is complex

c) Not space efficient

d) Graph Plotting

**Answer:** Graph Plotting

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