diff --git a/maths.txt b/maths.txt
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+> factor - to find factor 
+eg : $factor 15 
+          3
+          5
+     $factor
+       28
+            2
+            2
+            7
+
+Tip: q to quit the program
+
+>expr - compute the given expression 
+
+eg : 
+
+$expr 2 + 5 
+7
+$expr 3\*3
+9