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Mathematics Fsc Part 1 Chapter 3 Online Test MCQs With Answers
Question # 1
[0] is a:
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Question # 2
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 # 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
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1
-5
-1
none
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Question # 5
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 # 6
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 # 7
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 # 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
-3
1/3
-1/3
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Question # 10
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scalar matrix
diagonalmatrix
triangularmatrix
none of these
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Question # 11
Minors and co-factors of the elements in a determinant are equal in magnitude but they may differ in:
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order
position
sign
symmetry
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Question # 12
A matrix in which each element is 0 is called:
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Question # 13
If A = [a
ij
], B = [b
ij
] and AB = 0 then:
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A = 0
B = 0
either A = 0 or B = 0
A & B not necessarily zero
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Question # 14
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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 matrix A is symmetric as well as skew symmetric, then:
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A is null matrix
A is unit matrix
A is triangular matrix
A is diagonal matrix
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Question # 17
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9
-9
-6
none
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Question # 18
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scalar matrix
diagonalmatrix
lower triangularmatrix
upper triangularmatrix
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Question # 19
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 # 20
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3×3
3×2
2×1
2×3
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Question # 21
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scalarmatrix
diagonalmatrix
lower triangularmatrix
uppertriangularmatrix
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