diff --git a/Task5/question1.js b/Task5/question1.js
new file mode 100644
index 0000000..3a0575c
--- /dev/null
+++ b/Task5/question1.js
@@ -0,0 +1,60 @@
+// http://www.codewars.com/kata/array-helpers
+
+Array.prototype.square = function() {
+    let arr = this;
+    let tempArr = [];
+    for (i = 0; i < arr.length; i++) {
+        tempArr.push(arr[i] * arr[i]);
+    }
+    return tempArr;
+}
+
+Array.prototype.cube = function() {
+    let arr = this;
+    let tempArr = [];
+    for (i = 0; i < arr.length; i++) {
+        tempArr.push(arr[i] * arr[i] * arr[i]);
+    }
+    return tempArr;
+}
+
+Array.prototype.sum = function() {
+    let arr = this;
+    let total = 0;
+    for (i = 0; i < arr.length; i++) {
+        total += arr[i];
+    }
+    return total;
+}
+
+Array.prototype.average = function() {
+    let arr = this;
+    let total = 0;
+    console.log(this);
+    for (i = 0; i < arr.length; i++) {
+        total += arr[i];
+    }
+    return arr.length > 0 ? total / arr.length : NaN;
+}
+
+Array.prototype.even = function() {
+    let arr = this;
+    let tempArr = [];
+    for (i = 0; i < arr.length; i++) {
+        if (arr[i] % 2 == 0) {
+            tempArr.push(arr[i]);
+        }
+    }
+    return tempArr;
+}
+
+Array.prototype.odd = function() {
+    let arr = this;
+    let tempArr = [];
+    for (i = 0; i < arr.length; i++) {
+        if (arr[i] % 2 != 0) {
+            tempArr.push(arr[i]);
+        }
+    }
+    return tempArr;
+}
diff --git a/Task5/question2.js b/Task5/question2.js
new file mode 100644
index 0000000..a7e42a0
--- /dev/null
+++ b/Task5/question2.js
@@ -0,0 +1,13 @@
+// http: //www.codewars.com/kata/extract-nested-object-reference
+
+Object.prototype.hash = function(string) {
+    let strArr = string.split(".");
+    let tempObj = this;
+    for (let i = 0; i < strArr.length; i++) {\
+        tempObj = tempObj[strArr[i]];
+        if (tempObj == undefined) {
+            return undefined;
+        }
+    }
+    return tempObj;
+}
diff --git a/Task5/question3.js b/Task5/question3.js
new file mode 100644
index 0000000..a4c5b64
--- /dev/null
+++ b/Task5/question3.js
@@ -0,0 +1,5 @@
+// http://www.codewars.com/kata/new-with-apply
+
+function construct(Class, ...args) {
+    return new Class(...args);
+}
diff --git a/Task5/question4.js b/Task5/question4.js
new file mode 100644
index 0000000..2f36174
--- /dev/null
+++ b/Task5/question4.js
@@ -0,0 +1,7 @@
+// http://www.codewars.com/kata/santaclausable-interface
+
+function isSantaClausable(obj) {
+    if (typeof(obj.sayHoHoHo) == "function" && typeof(obj.distributeGifts) == "function" && typeof(obj.goDownTheChimney) == "function")
+        return true;
+    return false;
+}