diff --git a/1-Javascript Fundamentals/code/operators.js b/1-Javascript Fundamentals/code/operators.js
index e69de29..6b27788 100644
--- a/1-Javascript Fundamentals/code/operators.js	
+++ b/1-Javascript Fundamentals/code/operators.js	
@@ -0,0 +1,47 @@
+
+//ARTHAMATIC OPERATIONS>>>>>>>>
+5+2 // 7 addition;
+
+5-1 // 4 subraction;
+
+2*2 // 4 multiply;
+
+54 % 5 // 4 modula;
+
+5/4 // 1.25 // division;
+
+//STRING OPERATIONS>>>>>>>>>>>>
+
+'teja ' + 'nayak' // teja nayak
+
+"teja" + "nayak" // tejanayak
+
+//NAN OPERATIONS>>>>>>>>>>>>>>>>
+NaN == NaN // false;
+
+NaN === NaN // false // NaN Stands for (Not A Number);
+
+'Teja' * 'Nayak' // NaN;
+
+Number.isNaN (1000) // false;
+
+Number.isNaN (NaN) // true;
+
+Number.isNaN ('teja') // false;
+
+Number.isNaN (45*65) // false;
+
+Number.isNaN (true) // false;
+
+Number.isNaN (false) // false;
+
+'5' + 5 // '55';
+
+'5'+'5' //'55';
+
+String (45+45) //'90' 
+
+Number (45+45) //'90';
+
+String (45+45) //'90' 
+
diff --git a/2-Javascript-Functions/1.High-order-return-function-arthamatic-operations.js b/2-Javascript-Functions/1.High-order-return-function-arthamatic-operations.js
new file mode 100644
index 0000000..c9f7684
--- /dev/null
+++ b/2-Javascript-Functions/1.High-order-return-function-arthamatic-operations.js
@@ -0,0 +1,45 @@
+function arithmeticOpeartions(operation){
+    if(operation === '+'){
+        return function(a,b){
+            return a+b;
+        }
+    }else if(operation === '-'){
+        return function(a,b){
+            return a-b;
+        }
+    }else if(operation === '*'){
+        return function(a,b){
+            return a*b;
+        }
+    }else if(operation === '/'){
+        return function(a,b){
+            return a/b;
+        }
+    }else if(operation === '%'){
+        return function(a,b){
+            return a%b;
+        }
+    }else return function(a,b){
+        return 0;
+    }
+};
+
+const addfunction = arithmeticOpeartions('+');
+const multiplyfunction = arithmeticOpeartions('*');
+const subractfunction = arithmeticOpeartions('-');
+const divisionfunction = arithmeticOpeartions('/');
+const modulefunction = arithmeticOpeartions('%');
+
+const result1 = addfunctionarithmeticOpeartions(85,960);//1045
+const result2 = multiplyfunction(852,963);//820476
+const result3 = subractfunction(852,963);//-111
+const result4 = divisionfunction(852,963);//0.8847352024922118
+const result5 = modulefunction(852,963);//852
+
+console.log(result1);
+console.log(result2);
+console.log(result3);
+console.log(result4);
+console.log(result5);
+
+