diff --git a/5-advanced-JS/starter/script.js b/5-advanced-JS/starter/script.js
index 58cd78ca1f..4bffb5671c 100755
--- a/5-advanced-JS/starter/script.js
+++ b/5-advanced-JS/starter/script.js
@@ -116,27 +116,74 @@
 // console.log(rates);
 
 //Functions returning another function
+// function interviewQuestion(job){
+//     if (job === 'designer') {
+//         return function(name) {
+//             console.log(name, ', Can you please explain what UX design is?')
+//         }
+//     } else if(job === 'teacher') {
+//         return function(name){
+//             console.log('what subject do you teach', name);
+//         }
+//     } else {
+//         return function(name) {
+//             console.log('Hello', name, 'what do you do?');
+//         }
+//     }
+// }
+
+// var teacherQuestion = interviewQuestion('teacher');
+// var designerQuestion = interviewQuestion('designer');
+
+// teacherQuestion('John');
+// designerQuestion('Jane');
+
+// interviewQuestion('teacher')('Mark');
+
+//IIFE
+//Immediatlt Invoked Function
+
+// function game() {
+//     var score = Math.random() * 10;
+//     console.log(score >= 5);
+
+// }
+// game();
+
+// (function(goodluck){
+//     var score = Math.random() * 10;
+//     console.log(score >= 5 - goodluck);
+// })(5);
+
+//Closures
+function retirement(retirementAge) {
+    var a = ' years left until retirement';
+    return function(yearOfBirth){
+        var age = 2016 - yearOfBirth;
+        console.log((retirementAge - age) + a);
+    }
+}
+
+var retirementUS = retirement(66);
+var retirementDE = retirement(65);
+var retirementIceland = retirement(67);
+
+retirementUS(1990);
+retirementDE(1990);
+retirementIceland(1990);
+
 function interviewQuestion(job){
-    if (job === 'designer') {
-        return function(name) {
+    return function(name){
+        if(job === 'designer') {
             console.log(name, ', Can you please explain what UX design is?')
-        }
-    } else if(job === 'teacher') {
-        return function(name){
+        } else if(job === 'teacher') {
             console.log('what subject do you teach', name);
-        }
-    } else {
-        return function(name) {
+        } else {
             console.log('Hello', name, 'what do you do?');
         }
     }
 }
 
-var teacherQuestion = interviewQuestion('teacher');
-var designerQuestion = interviewQuestion('designer');
-
-teacherQuestion('John');
-designerQuestion('Jane');
-
-interviewQuestion('teacher')('Mark');
-
+interviewQuestion('designer')('John');
+interviewQuestion('teacher')('Jane');
+interviewQuestion('drug dealer')('Mark');
\ No newline at end of file