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diff --git a/2885/CH1/EX1.1/ex1_1.sce b/2885/CH1/EX1.1/ex1_1.sce
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+//Find the range of tolerance
+clear;
+clc;
+//soltion
+//given
+
+//color coding
+orange=3;
+gold=5;
+yellow=4;
+violet=7;
+//band pattern
+band1=yellow;
+band2=violet;
+band3=orange;
+band4=gold;
+//resistor color coding
+r=(band1*10+band2)*10^(band3);
+tol=r*(band4/100)//tolerance
+ulr=r+tol;//upper limit of resistance
+llr=r-tol;//lower limit of resistance
+printf('The Range of resistance is %.2f kΩ to %.2f kΩ',llr/1000,ulr/1000);