diff --git a/src/functions-and-arrays.js b/src/functions-and-arrays.js
index ce8695c..a225658 100644
--- a/src/functions-and-arrays.js
+++ b/src/functions-and-arrays.js
@@ -1,29 +1,61 @@
 // Iteration 1 | Find the Maximum
-function maxOfTwoNumbers() {}
-
-
+function maxOfTwoNumbers(num1,num2) {
+    if (num1 > num2) {
+        return num1
+    } else if (num2 > num1) {
+        return num2
+    } else {
+        return num1
+    }
+}
 
 
 // Iteration 2 | Find the Longest Word
 const words = ["mystery", "brother", "aviator", "crocodile", "pearl", "orchard", "crackpot"];
 
-function findLongestWord() {}
+function findLongestWord(array) {
+    
+    if (array.length === 0 || array === undefined){
+        return null
+    } else {
 
+        let longestWord = ""
+        
+        for (let i = 0; i < array.length; i++){
+            
+            if (array[i].length > longestWord.length) {
+                longestWord = array[i]
+            }
+        }  
+        return longestWord
+    }
 
+}
 
 
 // Iteration 3 | Sum Numbers
 const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
 
-function sumNumbers() {}
-
-
-
+function sumNumbers(array) {
+    let totalSum = 0
+    for(let i = 0; i < array.length; i++){
+        totalSum += array[i]
+    }
+    return totalSum
+}
 
 // Iteration 4 | Numbers Average
 const numbers2 = [2, 6, 9, 10, 7, 4, 1, 9];
 
-function averageNumbers() {}
+function averageNumbers(array) {
+    let numbersAverage
+    if (array.length === 0 || array === undefined){
+        return numbersAverage = 0    
+    } else {
+        numbersAverage = sumNumbers(array) / array.length
+    return numbersAverage
+    }
+}
 
 
 
@@ -31,4 +63,22 @@ function averageNumbers() {}
 // Iteration 5 | Find Elements
 const words2 = ["machine", "subset", "trouble", "starting", "matter", "eating", "truth", "disobedience"];
 
-function doesWordExist() {}
+function doesWordExist(array, word) {
+    let verifyWord
+    if(array.length === 0 || array === undefined){
+        return null
+    } else {
+    for (let i = 0; i < array.length;i++){
+        
+        if (array[i] === word){
+            verifyWord = true
+            break
+        } else {
+            verifyWord = false
+        }
+
+    }
+    }
+    return verifyWord
+}
+