PPSC Economics Topic 13 Mathematics in Economics With Answers

PPSC Economics Topic 13 Mathematics in Economics

Sr. # Questions Answers Choice
1 The value of the dependent variable where the graph cuts the y-axis is called. X - intercept Y- intercept Slope None of these
2 The increase in dependent variable that results when the independent variable increases by one unit in a simple lines. function is called. Y intercept of the curve Slope of the curve X intercept of the curve Marginal value
3 A function where a variable x can only very in jumps, is often called. Non linear functions Inverse function Step function All of above
4 The function y = 2x + 1 and x = 1/2 y - 1/2 are said to be. Non linear functions Inverse functions Step functions All the above
5 The variable that stands alone on the left hand side of the equation such as y = 2x + 1 is known as. Dependent variable Independent variable Endogenous variable Explained variable
6 A variable which is free to take any value we choose to assign to it is called. Dependent variable Independent variable Endogenous variable Explained variable
7 If any equation involving two variables, such as y -=2x + 1, the variable that appears on the right hand side of the equation is by convention called. Dependent variable independent variable Endogenous variable Explained variable
8 Given or known values in an equation are called. Constants Parameters Coefficients All of the above
9 Unknown values in an equation are called. Constants Numeraire Variables All of the above
10 any number raise to the power zero is always equal to. zero one two The number itself
11 The set of subsets of a set A is called. Power set of A Complement of A Both a and b None of these
12 The set of all elements belonging to A but not to B is. B - A A - B A' B'
13 A set containing all the elements of the universal set except those of set A is called. Complement of set A Complement of universal set Union of A and universals set Universal set itself
14 if two sets do not have any common element, then they are called. Complement sets Joint sets Disjoint sets None of these
15 If a Set C contain all the elements which are present in both the set A and B then set C is called. Union of A and B Intersection of A and B Complement of A Complement of B
16 If B is a subset of A, then AUB = B Intersection of A and B A None of these
17 The associative law of union is AU (BUC= (AUB) U C AUB = BUA BUC = BUA
18 Union of A with B is same as union of B with A, that is AUB = BUA is termed as Associative law of union Cumulative law of union Reflective law All the above
19 Union of A and a null set is equal is. Intersection of A and null set Null set Both a and b A
20 Union of A and the universal set is A A' Universal set None of these
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