diff --git a/01-greeting/index.js b/01-greeting/index.js
index 8f551af..5c0279c 100644
--- a/01-greeting/index.js
+++ b/01-greeting/index.js
@@ -1,4 +1,4 @@
 export function greet(name) {
   // implementar logica aqui
-  return "";
+  return `Hello ${name}`;
 }
diff --git a/02-triangleArea/index.js b/02-triangleArea/index.js
index 7628fcd..d26b62a 100644
--- a/02-triangleArea/index.js
+++ b/02-triangleArea/index.js
@@ -1,3 +1,4 @@
 export function triangleArea(base, height) { 
   // your code here
+  return base*height /2
 } 
\ No newline at end of file
diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..3b43b38 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,9 @@
 export function maxValue(values) {
   // implementar logica aqui
-  
+  if(values.length > 0){
+    return Math.max.apply(null, values);
+  }
+  else{
+    return 0;
+  } 
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..f316e95 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,13 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
-}
\ No newline at end of file
+  if(value <= 1){
+    return value
+  }
+  let v1 = 0, v2 = 1, v3 = 1;
+  for (let i = 2; i <= value ; i++) {
+    v3 = v1 + v2;
+    v1 = v2;
+    v2 = v3 
+  }
+  return v3;
+}
diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..9959aee 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
   // implementar logica aqui
-  
+  for (let n = 2; n < value; n++)
+    if (value % n === 0){
+      return false   
+     }
+  return value > 1
+ 
 }
\ No newline at end of file
diff --git a/06-sum/index.js b/06-sum/index.js
index ebc2ee1..5649405 100644
--- a/06-sum/index.js
+++ b/06-sum/index.js
@@ -1,4 +1,8 @@
 export function sum(values) {
   // implementar logica aqui
-  
+  let soma = 0
+  for(let i = 0; i < values.length; i++){
+    soma += values[i]
+  }
+  return soma
 }
\ No newline at end of file
diff --git a/07-sumEven/index.js b/07-sumEven/index.js
index bb1e095..ec9bcfb 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,9 @@
 export function sumEven(value) {
   // implementar logica aqui
-  
+  let soma = 0
+  for(let i = 0; i < value.length; i++){
+    if(value[i] % 2 === 0)
+    soma += value[i]
+  }
+  return soma
 }
\ No newline at end of file
diff --git a/08-isAnagram/index.js b/08-isAnagram/index.js
index 918308a..6a44003 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,12 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
+  if(word1.length !== word2.length){
+    return false;
+  }
+  let palavra_1 = word1.toLowerCase().split('').sort().join('');
+  let palavra_2 = word2.toLowerCase().split('').sort().join('');
+
+  let anagram = (palavra_1 === palavra_2)
+  return anagram
+
 }
\ No newline at end of file
diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..c9e5eb3 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,18 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    const tl = text.length;
+    const freq = {};
+    let maxFreq = 0;
+    let maxChar;
+    for (let i = 0; i < tl; ++i){
+        const isPair = (text.charCodeAt(i) & 0xF800) == 0xD800;
+        const c = isPair ? text.substr(i++, 2) : text[i];
+        const f = (freq[c] || 0) + 1;
+        freq[c] = f;
+        if (f > maxFreq){
+            maxFreq = f;
+            maxChar = c;
+        }
+    }
+    return maxChar
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..aac5153 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,10 @@
 export function longestWords(words) {
     // implementar logica aqui
+    let longest = ""
+    for (let word of words){
+        if (word.length > longest.length) longest = word;
+    }
+    let longest_words = words.filter(item => item.length >= longest.length)
+    return longest_words
     
 }
\ No newline at end of file