Find the odd word out:(1) Prof. Pigou, Prof. Samuelson, Adam Smith, J. R. Hicks.(2) Individual consumer, Individual producer, Particular commodity, Total savings.(3) Product pricing, Investment function, Factor pricing, Economic welfare. (4) Efficiency in social activities, Efficiency in production, Efficiency in consumption, Overall economic efficiency. (5) Price theory, Slicing method, Limited scope, Lumping method. (6) Aggregate demand, Aggregate supply, Personal income, National income. (7) National income, National output, National employment, National anthem. (8) Keynes, Malthus, Fisher, Marshall. (9) Theory of Economic welfare, Theory of income and employment, Theory of General price level, Theory of Economic growth. (10) National Income, National Product, Per Capita Income, Gross Salary. (11) Big, Large, Vast, Tiny. (12) Microscopic, Massive, Small, Minimum.(13) Rent, Wages, Capital, Profit. (14) Land, Labour, Interest, Entrepreneur. (15) Railways, Reliance, K.E.M. Hospital,