Chapter 3. Matrices and Determinant mcqs with solution
Chapter 3. Matrices and Determinant
1)
The order of the matrix [4 7 3]
is
A) 3 ´ 1
B) 1 ´ 3
C) 3 ´ 3
D) 1 ´ 1
2) The value of determinant of the matrix 
is
A) 0
B) 1
C) 2
D) 3
3)
is a ______ matrix.
A) singular
B) unit
C) diagonal
D) scalar
4)
If
is singular matrix
then l =
A) 4
B) – 4
C) 12
D) 18
5) A, B, C are three matrices such that AB = C
Then B =
A) C
– 1A
B) CA
C) A
– 1C
D) AC
6)
Value of the determinant of
matrix 
is
A) 1
B) 2
C) 0
D) 3
7) Value of determinant of the matrix 
is
A) c
B) b
C) a
D) o
8)
If B is square matrix and Bt
= - B , then B is called
A) Symmetric
B) Skew
symmetric
C) Singular
D) Non-singular
9) For any two non singular square matrices A
and B, (AB) –1 =
A) AB
B) B –
1A – 1
C) A –
1B – 1
D) A –
1B
10)
If A = 
and B = 
then we can find
A) A + B
B) A – B
C) AB
D) BA
11)
If A is non singular square matrix
then A – 1 =
A) 
B) 
C) 
D) 
12)
If A is matrix of order m ´ n then kA is of order
(k is real number)
A) km ´ n
B) m ´ kn
C) km ´ kn
D) m ´ n
13) The value of determinant of the matrix 
is
A) 1
B) 0
C) 2
D) – 1
14) The value of determinant of the matrix 
is
A) 1
B) 2
C) 0
D) – 1
15)
The value of determinant of the
matrix
is
A) 0
B) 1
C) 2
D) 3
16)
If B = 
then – B is
A) 
B) 
C) 
D) 
17)
If A = 
then 2A is
A) 
B) 
C) 
D) 
Chapter 3. Matrices
and Determinant
1)
Answer: B
2) Answer: A
3)
Answer: C
4)
Answer: A
5) Answer: C
6)
Answer: C
7) Answer:
D
8)
Answer: B
9)
Answer: B
10)
Answer: C
11)
Answer: C
12)
D
13) Answer: B
14) Answer: C
15)
Answer: A
16)
Answer: A
17)
Answer: D
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