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					 Which of the following method is not used in determining National Income of a country ?
 
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-  Income Method 
 -  Output Method 
 -  Input Method 
 - Investment Method
 
 -  Income Method 
 
Correct Option: D
The national income of a country can be measured by three alternative methods: (i) Product Method: measures national income as a flow of goods and services (ii) Income Method: measures national income as a flow of factor incomes and (iii) Expenditure Method: measures national income as a flow of expenditure.