Question # 1

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

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Explicit function

implicit function

Quadratic function

All of the above

If matrix A is matrix of order n x m and B is another matrix of order m x n, then BA will be the matrix of order.

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n x m

m x n

n x n

m x m

Given the demand function qo = -8p +2000 and tis inverse p = -1/8 qo + 250 ,p in the inverse function which is interpreted as the maximum price that buyers are willing to pay for the.

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Supply price

Demand price

Equilibrium price

Reserved price

A set containing only one element is termed as

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Unit set

Singleton set

Both a and b

None of these

The signed minor of the matrass A is called.

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Adjoin

Co factor

Minor

Rank

a x2 + bx + c = 0

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Linear equation

Quadratic equation

Polynomial of degree five

None of these

The simplest form of rectangular hyperbola is

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y = 1/x

y = x2

y = x-2

y = x3

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

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n x m dimension

m x n dimension

n x p dimension

m x m dimension

(A+B) = (B+A) this law of matrices is known as.

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Cumulative law

Associative law

Distributive law

Identity law

A square matrix with 1's in its principal diagonal and zeros every where else is.

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Diagonal matrix

Identity matrix

Leading diagonal

Scalar matrix

The equilibrium price and quantity , given the inverse demand and supply functions.

po = 3q +30 and p s = 2q -5

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p = 9 and q = 7

p = 10 and q = 7

p = 9 and q = 8

p = 7 and q = 9

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

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Symmetric

Non symmetric

Skew symmetric

Non skew symmetric

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

Given the demand and supply cautions qo = -8p + 2000 and qs = 12 p - 200 respectively the equilibrium price.

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p = 100

p = 110

p = 120

p = 140

If every element of a set B is also an elements of A then

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A is a subset of B

B is a subset of A

A is not a subset of B

B is not a subset of A

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PPSC Economics Chapter 13 Mathematics in Economics MCQs With Answers

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