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Mathematics ECAT Pre Engineering Chapter 5 Matrices and Determinants Online Test MCQs With Answers
Question # 1
An equation of the form ax + by = k is homogeneous linear equation when
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b = 0, a = 0
a = 0,b ≠ 0
b = -0,a≠ 0
a≠ 0,b≠ 0, k = 0
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Question # 2
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k3
0
3k
k6
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Question # 3
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-a -b -c
1
0
-1
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Question # 4
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Orthogonal
Involutary
Idempotent
Nilpotent
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Question # 5
System of linear equations is inconsistent if
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System has no solution
System has one solution
System has two solution
None of above
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Question # 6
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I
|A|
|A| I
None of these
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Question # 7
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all are correct
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Question # 8
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Question # 9
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0
1
-A
-1
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Question # 10
Matrices A = [aij] 2 x 3 and B = [bij] 3 x 2 are suitable for
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BA
A2
AB
B2
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Question # 11
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3 x 1
1 x 3
3 x 3
1 x 1
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Question # 12
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Question # 13
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Question # 14
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Question # 15
If A = |aij| is (m x n) matrix then transpose of A is of the order
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m x m
m x n
n x n
n x m
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Question # 16
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x =0, y =4
x = -1, y = 2
x = 2, y = 3
x = 3, y = 4
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Question # 17
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1, 2, 3
1, 5, 9
2, 5, 8
3, 6, 9
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Question # 18
(ABC)' =
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CBA'
CBA
C'B'A
C'B'A'
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Question # 19
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Question # 20
If A is a skew-symmetric matrix of order n and P, any square matrix of order n.prove that P' AP is
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Skew-symmetric
Symmetric
Null
Diagonal
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Question # 21
The matrix A is Hermitian when (A)' =
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A
-A
A
A'
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