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1. The annual rate of growth in population of a town is \(10\%\). If its present population is \(26620\), then the population \(3\) years ago was .
 
2. If the compound interest is calculated quarterly, the amount is found using the formula i1+iii.
 
3. The difference between the C.I and S.I for  \(2\) years for a principal of \(₹5000\) at the rate of interest \(8\%\) p.a is \(₹\).