diff --git a/index.html b/index.html
index ef273b7..af4cb91 100755
--- a/index.html
+++ b/index.html
@@ -20,8 +20,8 @@ <h1>Loops Exercises</h1>
 
     <section id="menu">
       <ul>
-        <li><button type="button" class="btn btn-primary" onclick="yourFunctionName()">Example 3.1</button></li>
-        <li><button type="button" class="btn btn-primary" onclick="yourFunctionName()">Example 3.2</button></li>
+        <li><button type="button" class="btn btn-primary" onclick="zipper()">Example 3.1</button></li>
+        <li><button type="button" class="btn btn-primary" onclick="makeLargeNumber()">Example 3.2</button></li>
       </ul>
     </section>
 
diff --git a/js/script.js b/js/script.js
index c36bf4a..f1f1f24 100755
--- a/js/script.js
+++ b/js/script.js
@@ -2,12 +2,33 @@
 
 var display = document.getElementById("display");
 
-function yourFunctionName (){
-  display.innerHTML = "hello";
+// function yourFunctionName (){
+//   display.innerHTML = "hello";
+// }
+
+// function example(){
+//   var v = 3 +4;
+//
+//   display.innerHTML = v;
+// }
+
+function zipper(){
+  var letters = ['a', 'b', 'c'];
+  var numbers = ['1', '2', '3'];
+  var zipper = [];
+  for (var i = 0; i < letters.length; i++){
+    zipper.push([letters[i], numbers[i]]);
+  }
+  display.innerHTML = zipper;
 }
 
-function example(){
-  var v = 3 +4;
-  
-  display.innerHTML = v;
-}
\ No newline at end of file
+function makeLargeNumber(){
+  var randomNumbers = [50, 2, 1, 9];
+  var largeNumber = "";
+  randomNumbers.sort();
+
+  for(var i = randomNumbers.length-1; i >= 0; i--){
+    largeNumber += randomNumbers[i].toString();
+  }
+  display.innerHTML = largeNumber;
+}