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11th Class Part 1 Mathematics Chapter 3 Test Online MCQs With Answers
Question # 1
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None
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Question # 2
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singular
non-singular
rectangular
null
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Question # 3
For a square matrix A, |A| equals:
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A
t
|A
t
|
-|A
t
|
-A
t
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Question # 4
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3×1
1×3
3×3
1×1
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Question # 5
If any two rows of a square matrix are interchanged, the determinant of the resulting matrix:
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is zero
is multiplicative inverse of the determinant of the original matrix
is additive inverse of the determinant the original matrix
none of these
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Question # 6
If each element of a 3 × 3 matrix A is multiplied by 3, then the determinant of the resulting matrix is:
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|A|
3
27|A|
3|A|
9|A|
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Question # 7
If A is a square matrix order 3 × 3 the |kA| equals:
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k |A|
k
2
|A|
k
3
|A|
k
4
|A|
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Question # 8
If A is a square matrix, then A + A
t
is:
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Question # 9
If A is a matrix of order m × n, then the number of elements in each row of A is:
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m
n
m + n
m - n
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Question # 10
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scalar matrix
diagonalmatrix
lower triangularmatrix
upper triangularmatrix
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Question # 11
The order of a matrix is shown by:
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number of columns + number of rows
number of rows × number of columns
number of columns - number of rows
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Question # 12
A matrix of order m×1 is called:
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row matrix
column matrix
identity matrix
scalar matrix
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Question # 13
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1
-5
-1
none
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Question # 14
[0] is a:
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Question # 15
The trivial solution of the homogeneous linear equations is:
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(1, 0, 0)
(0, 1, 0)
(0, 0, 1)
(0, 0, 0)
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Question # 16
If A is a square matrix, then A - A
t
is:
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Question # 17
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Question # 18
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5
14
20
6
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Question # 19
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25
20
40
2a + 2b + 2c
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Question # 20
If two rows (or two columns) in a square matrix are identical (i.e. corresponding elements are equal), the value of the determinant is:
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0
1
-1
±1
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