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..bc6458b 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..f7d48ca 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,8 @@
 export function maxValue(values) {
   // implementar logica aqui
-  
+  if (values.length > 0){
+    return values = Math.max (...values)
+  } else {
+    return 0
+  }
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..cd85ba5 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,22 @@
 export function fibonacci(value) {
   // implementar logica aqui
+    if(value < 1){
+      return 0
+    }
+
+  if(value <= 2){
+      return 1
+  }
+
+  let prev = 0
+  let next = 1
+  let result = 0
   
-}
\ No newline at end of file
+  for (let i = 2; i <= value; i++){
+  result = next + prev
+  prev = next
+  next = result
+  }
+
+  return result
+  }
\ No newline at end of file
diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..17a08cf 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,9 @@
 export function isPrime(value) {
   // 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..971a2ea 100644
--- a/06-sum/index.js
+++ b/06-sum/index.js
@@ -1,4 +1,9 @@
 export function sum(values) {
   // implementar logica aqui
-  
+  let sum = 0;
+    for(let i = 0; i < values.length; i++) {
+        sum += values[i];
+    }
+
+    return sum
 }
\ No newline at end of file
diff --git a/07-sumEven/index.js b/07-sumEven/index.js
index bb1e095..8267233 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,11 @@
 export function sumEven(value) {
   // implementar logica aqui
-  
+  let sum = 0
+
+    for(let i = 0; i < value.length; i++) {
+      if(value[i] % 2 === 0){
+        sum += value[i]
+      }
+    }
+    return sum 
 }
\ No newline at end of file
diff --git a/08-isAnagram/index.js b/08-isAnagram/index.js
index 918308a..160191a 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,11 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
+  word1 = word1.toUpperCase().split('').sort().join('')
+  word2 = word2.toUpperCase().split('').sort().join('')
+
+  if(word1 === word2){
+      return true;
+  } else {
+      return false;
+  }
 }
\ No newline at end of file
diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..be8b6b2 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,19 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    let freqCounter = {}
+    let lcText = text.toLowerCase()
+
+    for (let char of lcText) {
+        freqCounter[char] = freqCounter[char] + 1 || 1;
+    }
+
+    let maxCount = 0;
+    let mostUsedChar = null;
+    for(let key in freqCounter) {
+        if(freqCounter[key] > maxCount) {
+            maxCount = freqCounter[key]
+            mostUsedChar = key
+        }
+    }
+    return mostUsedChar
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..e9c2f7e 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,19 @@
 export function longestWords(words) {
     // implementar logica aqui
+
+    let longestWord = ''
     
+    words.forEach((word) => {
+        if(word.length > longestWord.length){
+            longestWord = word
+        }
+    }); 
+
+    const longestWords = words.filter((word) => {
+        if(word.length === longestWord.length){
+            return word
+        }
+    });
+
+    return longestWords
 }
\ No newline at end of file