PPSC Economics Topic 13 Mathematics For Economics MCQS

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Sr.#	Question	Answer
1	The simplest form of rectangular hyperbola is	A. y = 1/x B. y = x2 C. y = x-2 D. y = x3
2	Th transpose of the cofactor matrix is called.	A. Adjoin of the matrix B. Power of a matrix C. Minor of the matrix D. Rank of a matrix
3	if we are told that the two statements y = 3x2 and y = x + 10' are bout true at the same time , they are called.	A. Implicit functions B. explicit functions C. Simultaneous equations D. Quadratic equations
4	if A = A , then A is	A. Symmetric matrix B. Skew symmetric matrix C. Identity matrix D. Orthogonal matrix
5	The signed minor of the matrass A is called.	A. Adjoin B. Co factor C. Minor D. Rank
6	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
7	A diagonal matrix whose diagonal elements are equal is called.	A. Unit matrix B. Singular matrix C. Scalar matrix D. Non singular matrix
8	If A and B are symmetric matrix, then AB- BA is.	A. Symmetric B. Skew symmetric matrix C. Idempotent matrix D. Orthogonal matrix
9	If every elements of a raw or column of a square matrix A is zero, then the value of the determinant .	A. Equal B. Zero C. One D. Negative related
10	The slope of a horizontal line is.	A. One B. Zero C. Three D. two
11	The increase in dependent variable that results when the independent variable increases by one unit in a simple lines. function is called.	A. Y intercept of the curve B. Slope of the curve C. X intercept of the curve D. Marginal value
12	In Vann diagram the universal set is represented by	A. Points within a rectangle B. Points within a circle C. Both a and b D. None of these
13	(A+B) + C =a +(B+C) This law of matrices is known as.	A. Cumulative law B. Associative law C. Distributive law D. Identity law
14	If two sets contains the same number of distinct elements but not the same elements are called.	A. Pie diagram B. Venn diagrams C. Histogram D. Ogives
15	A function where a variable x can only very in jumps, is often called.	A. Non linear functions B. Inverse function C. Step function D. All of above
16	Who is regarded as the founder of theory of sets.	A. Adam Smith B. Karl Frederich Gauss C. George cantor D. Euller
17	If matrix A is of m x n dimension, then A will be	A. n x m dimension B. m x n dimension C. n x p dimension D. m x m dimension
18	The point at which the graph cuts the x axis is called.	A. x- intercept B. y - intercept C. slope D. None of these
19	The variable that stands alone on the left hand side of the equation such as y = 2x + 1 is known as.	A. Dependent variable B. Independent variable C. Endogenous variable D. Explained variable
20	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

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PPSC Economics Topic 13 MCQS Test Preparation

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

PPSC Economics Topic 13 Mathematics in Economics

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

Th transpose of the cofactor matrix is called.

In a matrix , if there is only one row but any number of columns, it is called.

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

A determinant composed of all the first order partial derivatives of a system of equations, arranged in ordered sequence is called.

if we are told that the two statements y = 3x2 and y = x + 10' are bout true at the same time , they are called.

Matrix multiplication does not satisfy

Relation between two numbers or variables are called.

The matrix A multiplies by its inverse will b e a.

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

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

If matrix A is of m x n dimension, then A will be

If B is a subset of A, then AUB =

The elements in the Horizontal line in a matrix is called.

A possible use in economies for the circle of the ellipse is to model.

Unknown values in an equation are called.

In Vann diagram the universal set is represented by

A matrix with all elements zero other than all the diagonals is called.

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

A function where a variable x can only very in jumps, is often called.

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