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diff --git a/1208/CH1/EX1.2/Exa2.sce b/1208/CH1/EX1.2/Exa2.sce
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+//Exa2
+clc;
+clear;
+close;
+//given data :
+i=6;//in % per annum
+//we know rule of 72
+disp("According to Rule of 72 : doubling period=72/(rate of interest)");
+doublingperiod=72/i;
+disp(doublingperiod,"Doubling period(in years) : ");
+
+ 
+//we know rule of 69
+disp("According to Rule of 69 : doubling period=0.35+69/(rate of interest)");
+doublingperiod=0.35+69/i;
+disp(doublingperiod,"Doubling period(in years) : ");
+
+
+