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..60b1284 100644
--- a/02-triangleArea/index.js
+++ b/02-triangleArea/index.js
@@ -1,3 +1,4 @@
 export function triangleArea(base, height) { 
   // your code here
-} 
\ No newline at end of file
+  return base * height / 2;
+}
\ No newline at end of file
diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..4443a3c 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,5 @@
-export function maxValue(values) {
+export function maxValue(values = []) {
   // implementar logica aqui
-  
+  if (values.length < 1) return 0 
+  return Math.max(...values)
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..bd05558 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,12 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+  let n1 = 0
+  let n2 = 1
+  let temp
+  for (let i = 0; i < value; i++) {
+    temp = n1
+    n1 = n1 + n2
+    n2 = temp
+  }
+  return n1
 }
\ No newline at end of file
diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..0c09d66 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
-  // implementar logica aqui
-  
+// implementar logica aqui
+  for (let i = 2; i < value; i++) { 
+    if (value % i === 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..24d86ca 100644
--- a/06-sum/index.js
+++ b/06-sum/index.js
@@ -1,4 +1,6 @@
 export function sum(values) {
   // implementar logica aqui
-  
+  return values.reduce((somaTotal, numeroAtual) => {
+    return somaTotal + numeroAtual
+  },0)
 }
\ No newline at end of file
diff --git a/07-sumEven/index.js b/07-sumEven/index.js
index bb1e095..3259657 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,6 @@
 export function sumEven(value) {
   // implementar logica aqui
-  
+  return value.reduce((somaTotal, numeroAtual) => {
+    return numeroAtual % 2 == 0 ? somaTotal + numeroAtual : somaTotal
+  },0) 
 }
\ No newline at end of file
diff --git a/08-isAnagram/index.js b/08-isAnagram/index.js
index 918308a..788a365 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,4 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
+  return word1.toLowerCase().split("").sort().join("") == word2.toLowerCase().split("").sort().join("") ;
 }
\ No newline at end of file
diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..d1a9a80 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,18 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    let count = 0;
+    let char = " ";
+    let save = {};
+    text.split("").forEach((letter) => {
+        if(save[letter]){
+            save[letter] += 1;
+        } else {
+            save[letter] = 1;
+        }
+        if(save[letter] > count){
+            count = save[letter];
+            char = letter;
+        }
+    })
+    return char;
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..336f209 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,9 @@
 export function longestWords(words) {
     // implementar logica aqui
-    
+    return words.reduce((longWords, currentWord) => {
+        if(!longWords[0] || longWords[0].length < currentWord.length) return [currentWord];
+        if(longWords[0].length > currentWord.length) return longWords;
+        longWords.push(currentWord);
+        return longWords;
+    },[])
 }
\ No newline at end of file