In the case of two production-inputs, which one of the following is not a property of Isoquants (th production indifference curves)?

Which one of the following is not the basic property of indifference curves?

Which one of the following is not the assumption on which the theory of consumer behaviour is based on the cardinal utility approach?

Statement (I): Business decision makers deal with the complex, rather chaotic, business conditions of the real world and have to find the way to their destination, i.e., achieving the goal that they set for themselves.
Statement (II): Even without application of economic logic and tools of analysis, business decisions are always rational and real and are not counter productive.
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Statement (I): Point price elasticity of demand in terms of marginal and average revenues can be measured with the following formula:

Statement (II): The point price elasticity of demand is the product of the slope of the demand function and the ratio between corresponding price and quantity.
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Which one of the following statements is true?

Which one of the following is/are hold(s) true to successfully practice price discrimination?
A. The firm must be a pure monopoly
B. The firm must possess market power
C. It must be difficult for consumers in one market to sell to consumers in the other market
Choose the most appropriate answer from the options given below:

Sub-optimal allocation of resources under monopoly, which causes social welfare loss, is often inferred as: