PPSC Economics Topic 13 MCQS Test Preparation

If you have completed your higher education in the economy subject and now are looking to start your professional career through PPSC then you are at the right place now. The team of Ilmkidunya offers you online MCQs tests of economics subject. Candidates can find Topic -wise tests and full book tests. For every single Topic  or category, separate sections are designed. Here on this page candidates can find the MCQS PPSC test for Topic  13.

MCQ's Test For PPSC Economics Topic 13 Mathematics in Economics

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PPSC Economics Topic 13 Mathematics in Economics

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Question # 1

If the determinant formed by the elements of the matrix A is equal to zero, then the matrix is.

Question # 2

A diagonal matrix whose diagonal elements are equal is called.

Question # 3

A set continuing no elements is called.

Question # 4

If A is a square matrix of order ' n' and lis the unit matrix of the same order then A 1 is equal to.

Question # 5

The function y = 2x + 1 and x = 1/2 y - 1/2 are said to be.

Question # 6

If A and B are symmetric matrix, then AB- BA is.

Question # 7

The increase in dependent variable that results when the independent variable increases by one unit in a simple lines. function is called.

Question # 8

The equilibrium price and quantity , given the inverse demand and supply functions.
po = 3q +30 and p s = 2q -5

Question # 9

If each element of a raw or column is a sum of two elements, the determinant can be expressed as the

Question # 10

A linear function of the form 6x2 - 2y + 8 = 0 is known as.

Question # 11

If the columns of a given matrix A and B are changed into rows and vice versa, the matrix thus obtained is called the.

Question # 12

Th transpose of the cofactor matrix is called.

Question # 13

The sufficient condition required for the matrix to posses inverse is that the matrix should be.

Question # 14

A negative definite Hessian fulfills the second order conditions for.

Question # 15

If all the elements of a matrix of any order are zero, it is called.

Question # 16

any number raise to the power zero is always equal to.

Question # 17

If A and B are symmetric matrices, then A +B is

Question # 18

Ordered Pairs of two sets are called.

Question # 19

Union of A with A, that is A U A.

Question # 20

A square matrix a of order 'n' is called a diagonal matrix if its non diagonal elements are.

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Economics
13th Chapter

PPSC Economics Chapter 13 Test

Here you can prepare PPSC Economics Chapter 13 (Mathematics For Economics) Test. Click the button for 100% free full practice test.

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PPSC Economics Chapter 13 Important MCQ's

Sr.# Question Answer
1 If A is a square matrix of order ' n' and lis the unit matrix of the same order then A 1 is equal to.
A. A
B. 1A
C. 1
D. Both a and b
2 A variable which is free to take any value we choose to assign to it is called.
A. Dependent variable
B. Independent variable
C. Endogenous variable
D. Explained variable
3 A inverse is defined only if A is a
A. Square matrix
B. Column vector
C. Orthogonal matrix
D. Skew symmetric matrix
4 For any square matrix a of order 'n'a (Ad)A) is equal to.
A. (Ad) A) A
B. Determinant A
C. Rank of A
D. Both a and b
5 If each element of a raw or column is a sum of two elements, the determinant can be expressed as the
A. Sun of two determinants
B. Difference of two determinants
C. Multiplication of two determinants
D. Division of two determinants
6 A square matrix a such that A2 = a is called.
A. Orthogonal matrix
B. Skew symmetric matrix
C. Idempotent matrix
D. Singular matrix
7 If all the elements of a matrix of any order are zero, it is called.
A. Identity matrix
B. Null matrix
C. Zero matrix
D. Both b and c
8 a x2 + bx + c = 0
A. Linear equation
B. Quadratic equation
C. Polynomial of degree five
D. None of these
9 AB = BA = 1 , then B is said to
A. Ad joint of matrix of A
B. Inverse matrix of A
C. Determinant of A
D. Cofactor of a
10 The determinant of a matrix and that of its transpose are
A. Equal
B. Zero
C. One
D. Negatively related

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