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PPSC Economics Chapter 13 Mathematics in Economics MCQs With Answers
Question # 1
If B is a subset of A ,then A is a
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Super set of B
Sub set of B
Empty set of B
Universal set of B
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Question # 2
If two sets contains the same number of distinct elements but not the same elements are called.
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Pie diagram
Venn diagrams
Histogram
Ogives
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Question # 3
For any square matrix a of order 'n'a (Ad)A) is equal to.
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(Ad) A) A
Determinant A
Rank of A
Both a and b
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Question # 4
A square matrix a of order 'n' is called a diagonal matrix if its non diagonal elements are.
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zero
Non zero
One
None of the above
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Question # 5
A positive definite Hessian fulfills the second order conditions for
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Maximum
Minimum
Both maximum and minimum
Mini max
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Question # 6
The determinant of quadratic form is called.
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Jacobian determinant
Hessian determinant
Discriminant
None of these
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Question # 7
A matrix with all elements zero other than all the diagonals is called.
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Diagonal matrix
Orthogonal matrix
Unit matrix
Column vector
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Question # 8
If A and B are symmetric matrix, then AB- BA is.
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Symmetric
Skew symmetric matrix
Idempotent matrix
Orthogonal matrix
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Question # 9
The simplest form of rectangular hyperbola is
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y = 1/x
y = x2
y = x-2
y = x3
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Question # 10
If each element of a raw of column of a square matrix A is zero, then the value of the determinant. is.
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Equal
One
Zero
None of these
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Question # 11
The signed minor of the matrass A is called.
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Adjoin
Co factor
Minor
Rank
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Question # 12
The set of 'stars in the sky' is an example of
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Countable set
Infinite set
Finite set
unit set
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Question # 13
a x2 + bx + c = 0
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Linear equation
Quadratic equation
Polynomial of degree five
None of these
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Question # 14
If a consumer's budget constraint is given as P, X,+ Py Y = B thent he absolute slope of the budget line is.
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B
x/y
P/Py
None of these
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Question # 15
Matrix multiplication does not satisfy
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Associative law
Distributive law
Commutative law
None of the above
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Question # 16
If the determinant formed by the elements of the matrix A is equal to zero, then the matrix is.
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Skew symmetric
Singular
Symmetric
Non singular
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Question # 17
The associative law of union is
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AU (BUC= (AUB)
U C
AUB = BUA
BUC = BUA
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Question # 18
Unknown values in an equation are called.
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Constants
Numeraire
Variables
All of the above
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Question # 19
The set of subsets of a set A is called.
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Power set of A
Complement of A
Both a and b
None of these
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Question # 20
For any square matrix A of order 'n' a +A is.
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Skew symmetric
Non skew symmetric
Symmetric
Non symmetric
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Question # 21
The elements in the Horizontal line in a matrix is called.
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Columns
Rows
Elements
Diagonal
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