diff --git a/src/functions-and-arrays.js b/src/functions-and-arrays.js
index ce8695c..6bc67cc 100644
--- a/src/functions-and-arrays.js
+++ b/src/functions-and-arrays.js
@@ -1,5 +1,7 @@
 // Iteration 1 | Find the Maximum
-function maxOfTwoNumbers() {}
+function maxOfTwoNumbers(num1, num2) {
+    return (num1 > num2) ? num1 : num2
+}
 
 
 
@@ -7,7 +9,23 @@ function maxOfTwoNumbers() {}
 // Iteration 2 | Find the Longest Word
 const words = ["mystery", "brother", "aviator", "crocodile", "pearl", "orchard", "crackpot"];
 
-function findLongestWord() {}
+function findLongestWord(words) {
+    let LongestWord = ''
+
+    if (!words.length) {
+        return null
+    }
+
+    for (let i = 0; i < words.length; i++) {
+        const word = words[i];
+
+        if (word.length > LongestWord.length) {
+            LongestWord = word;
+        }
+    }
+
+    return LongestWord
+}
 
 
 
@@ -15,7 +33,20 @@ function findLongestWord() {}
 // Iteration 3 | Sum Numbers
 const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
 
-function sumNumbers() {}
+function sumNumbers(numbers) {
+    let count = 0;
+
+    if (!numbers.length) {
+        return count
+    }
+
+    for (let i = 0; i < numbers.length; i++) {
+        const number = numbers[i];
+        count += number
+    }
+
+    return count
+}
 
 
 
@@ -23,7 +54,14 @@ function sumNumbers() {}
 // Iteration 4 | Numbers Average
 const numbers2 = [2, 6, 9, 10, 7, 4, 1, 9];
 
-function averageNumbers() {}
+function averageNumbers(numbers2) {
+    
+    if (!numbers2.length) {
+        return 0
+    }
+
+    return sumNumbers(numbers2) / numbers2.length
+}
 
 
 
@@ -31,4 +69,19 @@ function averageNumbers() {}
 // Iteration 5 | Find Elements
 const words2 = ["machine", "subset", "trouble", "starting", "matter", "eating", "truth", "disobedience"];
 
-function doesWordExist() {}
+function doesWordExist(words2, wordSearch) {
+    
+    if (!words2.length) {
+        return null
+    }
+
+    for (let i = 0; i < words2.length; i++) {
+        const word = words2[i];
+        
+        if (word === wordSearch) {
+            return true
+        }
+    }
+
+    return false
+}