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ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test MCQs With Answers
Question # 1
System of linear equation 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 # 2
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16
256
64
1024
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Question # 3
A non-homogeneous linear system AX = B has no solution if
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|A| = 0
|A|≠ 0
Rank (a) = no of variables
Rank > no of variables
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Question # 4
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Diagonal matrix
Scalar matrix
Triangular matrix
Identity matrix
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Question # 5
If the trace of matrix A is 5, then the trace of the matrix 3A is
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3/5
5/3
8
15
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Question # 6
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6, -12, -18
-6, 4, 9
-6, -4, -9
-6, 12, 18
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Question # 7
For non-trival solution |A| is
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non zero
A = 0
|A| = 0
At = 0
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Question # 8
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Question # 9
In order of A is m x n and order of B is n x p then order of AB is
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m x m
n x n
m x p
p x m
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Question # 10
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0
1
2
4
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Question # 11
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Diagonal matrix
Scalar matrix
Triangular matrix
Identity matrix
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Question # 12
Trival solution of homogeneous linear equation is
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(0, 0, 0)
(1, 2, 3)
(1, 3, 5)
a, b and c
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Question # 13
The matrix A is Hermitian when (A)' =
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A
-A
A
A'
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Question # 14
A matrix with a single column is called
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Column matrix
Row matrix
Identity matrix
Null matrix
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Question # 15
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2s
2
2s
3
s
3
3s
3
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Question # 16
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I3
rI3
r
none
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Question # 17
The square matrix A is skew Hermitian when (A)'=
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A
A'
-A
A
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Question # 18
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1
-1
0
I
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Question # 19
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Triangular matrix
Identity matrix
Diagonal matrix
Scalar matrix
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Question # 20
Rank of matrix [1 3 5 0] is
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1
3
2
4
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Question # 21
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0
1
-2
10
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