Question:

For any square matrix A of order ‘n’, A +ATis

A.

skew symmetric

B.

non-skew symmetric

C.

symmetric

D.

non-symmetric

Answer» c. symmetric

Question:

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

Answer» a. dependent variable

Question:

Special type of relation is

A.

function

B.

binary relation

C.

inverse

D.

none of the above

Answer» a. function

Question:

A collection of well-defined distinct objects thought of as a whole is called

A.

union

B.

derivative

C.

set

D.

integral

Answer» c. set

Question:

An iso-cost line represents

A.

different combinations of two inputs that can be purchased with a given sum of money

B.

different combinations of two goods that can be purchased with a given income

C.

both (a) and (b)

D.

none of these

Answer» a. different combinations of two inputs that can be purchased with a given sum of money

Question:

Y= a0+a1X is a function

A.

nonlinear

B.

proportional

C.

polynomial

D.

linear

Answer» d. linear

Question:

Given the demand curve, P=20-0.2Q, the revenue curve will be

A.

20-0.2q

B.

10-.1q

C.

20q-0.2q

D.

20q-0.2q2

Answer» d. 20q-0.2q2

Question:

Sets and set operations can be represented by drawing diagrams termed as

A.

pie diagrams

B.

venn diagrams

C.

histogram

D.

ogives

Answer» b. venn diagrams

Question:

the sufficient condition required for the matrix to possess inverse is that the matrix should be

A.

square matrix

B.

singular matrix

C.

non-singular matrix

D.

orthogonal matrix

Answer» c. non-singular matrix

Question:

The transpose of the cofactor matrix is called

A.

adjoint of the matrix

B.

power of a matrix

C.

minor of the matrix

D.

rank of a matrix

Answer» a. adjoint of the matrix