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Mathematics Fsc Part 1 Chapter 3 Online Test MCQs With Answers
Question # 1
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ab - cd = 0
ac - bd = 0
ad - bc = 1
ad - bc = 0
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Question # 2
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 # 3
The additive inverse of a matrix A is:
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A
A
-1
- A
A
2
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Question # 4
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 # 5
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1
-1
-6
6
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Question # 6
Two matrices X and Y are equal if and only if:
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X and Y are of same order
Their corresponding elements are equal
Both a and b
None of these
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Question # 7
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 # 8
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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Question # 9
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3×1
1×3
3×3
1×1
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Question # 10
A matrix in which each element is 0 is called:
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Question # 11
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Question # 12
If A is a square matrix, then:
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|A
t
| = A
|A
t
| = -A
|A
t
| = |A|
A
t
= A
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Question # 13
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scalarmatrix
diagonalmatrix
lower triangularmatrix
uppertriangularmatrix
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Question # 14
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zero
non-singular
singular
none of these
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Question # 15
If AB = BA = I, then A and B are:
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equal to each other
multiplicative inverse of each other
additive inverse of each other
both singular
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Question # 16
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 # 17
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diagonal matrix
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Question # 18
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5
14
20
6
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Question # 19
If A and B are two matrices, then:
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A B = O
AB = BA
AB = I
AB may not be defined
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Question # 20
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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