diff --git a/assignments/array-methods.js b/assignments/array-methods.js
index f3862361e..07bde0cac 100644
--- a/assignments/array-methods.js
+++ b/assignments/array-methods.js
@@ -59,24 +59,41 @@ const runners = [
 // The event director needs both the first and last names of each runner for their running bibs. Combine both the first and last names and populate a new array called `fullNames`. This array will contain just strings.
 let fullNames = [];
 console.log(fullNames);
-
+runners.forEach(function (fna) {
+  fullNames.push(`${fna.first_name} ${fna.last_name}`);
+});
+console.log(fullNames);
 // ==== Challenge 2: Use .map() ====
-// The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER. Populate an array called `firstNamesAllCaps`. This array will contain just strings.
+// The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER. 
+//Populate an array called `firstNamesAllCaps`. This array will contain just strings.
 let firstNamesAllCaps = [];
 console.log(firstNamesAllCaps);
-
+firstNamesAllCaps=runners.map(function(fname){
+  return(fname.first_name.toUpperCase());
+});
+console.log(firstNamesAllCaps);
 // ==== Challenge 3: Use .filter() ====
-// The large shirts won't be available for the event due to an ordering issue. We need a filtered version of the runners array, containing only those runners with large sized shirts so they can choose a different size. This will be an array of objects.
+// The large shirts won't be available for the event due to an ordering issue. We need a filtered version of the runners array, 
+//containing only those runners with large sized shirts so they can choose a different size. This will be an array of objects.
 let runnersLargeSizeShirt = [];
+//console.log(runnersLargeSizeShirt);
+runnersLargeSizeShirt=runners.filter(function(lshirt){
+  if(lshirt.shirt_size==="L"){
+    return true;
+  } 
+});
 console.log(runnersLargeSizeShirt);
-
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations and save the total into a ticketPriceTotal variable.
 let ticketPriceTotal = 0;
+ticketPriceTotal=runners.reduce(function(total,donat){
+  return total +  donat.donation;
+},0);
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
-// Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
+// Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve 
+//given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
 
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
index cb72e70c9..18f4cb249 100644
--- a/assignments/callbacks.js
+++ b/assignments/callbacks.js
@@ -41,25 +41,56 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr);
+}
+console.log(getLength(items,len));
+//
+function len(){
+  return(items.length); 
 }
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr);
+}
+function enditem(){
+  return(items[items.length-1]);
 }
+//console.log(enditem(items));
+
+console.log(last(items,enditem));
+
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
-}
+  return cb(x,y);
 
+}
+function addition(a,b){
+  return a+b;
+}
+console.log(sumNums(4,9,addition));
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x,y);
 }
-
+function multiply(a,b){
+  return a*b;
+}
+console.log(multiplyNums(10,3,multiply));
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  return cb(item,list);
 }
 
+function isfound(a,items){
+  for(i=0;i<items.length;i++){
+    if(items[i]===a) return 1;
+   
+  }
+}
+console.log(contains('Notebook',items,isfound));
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {
diff --git a/assignments/closure.js b/assignments/closure.js
index 4b399c098..dbf636e5a 100644
--- a/assignments/closure.js
+++ b/assignments/closure.js
@@ -3,10 +3,26 @@
 // Keep it simple! Remember a closure is just a function
 // that manipulates variables defined in the outer scope.
 // The outer scope can be a parent function, or the top level of the script.
+function grandgrandpa() {
+  console.log("I m grand grand papa");
 
+  function grandpa() {
+    console.log("I m grand papa");
+    function papa() {
+      console.log("I m  papa");
+      function papason() {
+        console.log("I m  papa son");
+      }
+     papason();
+    }
+    papa(); 
+  }
+  grandpa();
+}
+grandgrandpa(); 
 
-/* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
+/* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
 // ==== Challenge 2: Implement a "counter maker" function ====
 const counterMaker = () => {