The marks obtained by 9 students in a class test are recorded below: 9, 8, 7, 5,7, 6, 8, 9 and 7. What is the median mark?

The demand for a factor input as a result of the demand for its output is known as

Industries are sometimes located in areas which are not profitable so as to

To overcome the problem of double counting under the expenditure approach,

A government may cause a favourable change in her invisible trade account by

If the government stops subsidy on cocoa production, the supply curve of cocoa will

The supply of light could be met using a candle, lantern and gas lamp. This is an example of a

A monopolist may enjoy abnormal profit only if its

Which of the following is a non-renewable natural resources?