Solution:The term National Income (NI) represents Gross National Product at market prices (GNPMP) minus depreciation and indirect taxes plus subsidies. Net National Product at Factor Cost (NNPpc) is known as National Income (NI).
NNPmp)= GNPmp - Depreciation
NNI fc(NI) = NNPmp - Indirect Taxes + Subsidies
NNPmp-Net Product Taxes - Net Production Taxes
NI = GNPmp-Depreciation - Indirect Taxes + Subsidies
The relation between different forms of National Product-

Net Indirect Taxes (NIT) = Indirect Taxes - Subsidy,
GNP = Gross National Product, NNP = Net National Product,
GDP = Gross Domestic Product, NDP = Net Domestic Product,
MP = Market Prices, FC = Factor Cost,
D = Depreciation, NFI = Net Factor Income from Abroad