81.
Match the items of List-I with the items of List-II and choose the correct.
List-I List-II
a. Income elasticity less than unity 1. Competitive goods
b. Cross elasticity less than unity 2. Inferior foods
c. Cross elasticity less than zero 3. Superior goods
d. Income elasticity less than zero 4. Complementary goods

84.
The various degrees of price elasticity of demand can be shown on a single demand curve as per which one of the following?

85.
Which of the following is the best general definition of the study of business economics?

86.
The kinked demand curve model of oligopoly assumes that the price elasticity of demand

90.
Consider the following statements.
1. The main purpose of a business firm is to earn profit.
2. Capital management(s) is dealt within business economic.
3. Cost analysis is required for cost control.
Which of the statement(s) given above is/are correct?