diff --git a/01-greeting/index.html b/01-greeting/index.html
index fd1a9d6..16789c7 100644
--- a/01-greeting/index.html
+++ b/01-greeting/index.html
@@ -16,7 +16,7 @@
         */
         function greet(name) {
             // implementar logica aqui
-            return ""
+            return `Hello ${name}`;
         }
 
         // Resultados esperados
diff --git a/02-area-do-triangulo/index.html b/02-area-do-triangulo/index.html
index c2f2000..efb9fbf 100644
--- a/02-area-do-triangulo/index.html
+++ b/02-area-do-triangulo/index.html
@@ -16,7 +16,8 @@
         */
         function triangleArea(base, height) {
             // implementar logica aqui
-            return 0
+            let area = (base * height)/2;
+            return area;
         }
 
         // Resultados esperados
diff --git a/03-max-value/index.html b/03-max-value/index.html
index f607d3f..6cb47b0 100644
--- a/03-max-value/index.html
+++ b/03-max-value/index.html
@@ -14,7 +14,8 @@
         */
       function maxValue(values) {
         // implementar logica aqui
-        return 0;
+        let higherNumber = Math.max(...values);
+        return higherNumber;
       }
 
       // Resultados esperados
diff --git a/04-fibonnaci/index.html b/04-fibonnaci/index.html
index 2500754..412d334 100644
--- a/04-fibonnaci/index.html
+++ b/04-fibonnaci/index.html
@@ -17,7 +17,8 @@
         */
         function fib(values) {
             // implementar logica aqui
-            return 0
+            var sqrt5 = Math.sqrt(5);
+            return Math.round(Math.pow(((1 + sqrt5) / 2), values) / sqrt5);
         }
 
         // Resultados esperados
diff --git a/05-é-primo/index.html b/05-é-primo/index.html
index cd11c0c..25d6b17 100644
--- a/05-é-primo/index.html
+++ b/05-é-primo/index.html
@@ -16,8 +16,12 @@
         */
         function isPrime(number) {
             // implementar logica aqui
-            return false
-        }
+            for (let i = 2; i < number; i++)
+                if (number % i === 0) {
+                    return false;
+                }
+            return number > 1;
+        }        
 
         // Resultados esperados
         console.log(isPrime(2), true) // true
diff --git a/06-soma-dos-elementos/index.html b/06-soma-dos-elementos/index.html
index 3d50c2d..0b81939 100644
--- a/06-soma-dos-elementos/index.html
+++ b/06-soma-dos-elementos/index.html
@@ -16,7 +16,11 @@
         */
         function sum(numbers) {
             // implementar logica aqui
-            return 0
+            let sumOfArrays = 0;
+            for(let index = 0; index < numbers.length; index +=1) {
+                sumOfArrays = sumOfArrays + numbers[index];
+            }
+            return sumOfArrays;
         }
 
         // Resultados esperados
diff --git a/07-soma-dos-pares/index.html b/07-soma-dos-pares/index.html
index 9b617fa..8d91c94 100644
--- a/07-soma-dos-pares/index.html
+++ b/07-soma-dos-pares/index.html
@@ -16,7 +16,13 @@
         */
         function sum(numbers) {
             // implementar logica aqui
-            return 0
+            let sumOfEven = 0;
+            for (let i = 0; i < numbers.length; i++) {
+                if (numbers[i] % 2 === 0) {
+                    sumOfEven = sumOfEven + numbers[i];
+                }
+            }
+            return sumOfEven;
         }
 
         // Resultados esperados
diff --git a/08-anagrama/index.html b/08-anagrama/index.html
index 5f6618f..c6b3d42 100644
--- a/08-anagrama/index.html
+++ b/08-anagrama/index.html
@@ -16,7 +16,14 @@
         */
         function isAnagram(test, original) {
             // implementar logica aqui
-            return ""
+            const Anagram = str =>
+              str
+                .toLowerCase()
+                .replace(/[^a-z0-9]/gi, '')
+                .split('')
+                .sort()
+                .join('');
+            return Anagram(test) === Anagram(original);
         }
 
         // Resultados esperados
diff --git a/09-caractere-mais-repetido/index.html b/09-caractere-mais-repetido/index.html
index be8d80e..839cc9e 100644
--- a/09-caractere-mais-repetido/index.html
+++ b/09-caractere-mais-repetido/index.html
@@ -16,7 +16,15 @@
         */
         function mostUsedChar(text) {
             // implementar logica aqui
-            return ""
+            let max = 0,
+            maxChar = '';
+            text.split('').forEach(function(char){
+                if(text.split(char).length > max) {
+                    max = text.split(char).length;
+                    maxChar = char;
+                }
+            });
+            return maxChar;
         }
 
         // Resultados esperados