diff --git a/01-greeting/index.js b/01-greeting/index.js
index 8f551af..4bef4b0 100644
--- a/01-greeting/index.js
+++ b/01-greeting/index.js
@@ -1,4 +1,5 @@
 export function greet(name) {
   // implementar logica aqui
-  return "";
+  const frase = `Hello ${name}`;
+  return frase;
 }
diff --git a/02-triangleArea/index.js b/02-triangleArea/index.js
index 7628fcd..5fedc42 100644
--- a/02-triangleArea/index.js
+++ b/02-triangleArea/index.js
@@ -1,3 +1,5 @@
 export function triangleArea(base, height) { 
   // your code here
+  const area = (base * height) / 2;
+  return area;
 } 
\ No newline at end of file
diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..e357a27 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 < 1) {
+    return 0;
+  }
+  const maior = Math.max(...values);
+
+  return maior;
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..455d010 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,13 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+  if (value <= 1) {
+    return value;
+  }
+
+  let arr = [0, 1];
+
+  for (let i = 2; i < value + 1; i++) {
+    arr[i] = arr[i - 2] + arr[i - 1];
+  }
+  return arr[value];
 }
\ No newline at end of file
diff --git a/05-isPrime/index.js b/05-isPrime/index.js
index ec9c4ac..6f72492 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,22 @@
 export function isPrime(value) {
   // implementar logica aqui
-  
+  let totalDivisores = 0;
+
+  for (let i = 1; i <= value; i++) {
+    if (value % i == 0) {
+      totalDivisores++
+    }
+  }
+
+  if (totalDivisores == 2) {
+    return true;
+  } else return false
+
+  if (value === 2) {
+    return true;
+  }
+
+  if (value === 1) {
+    return false;
+  }
 }
\ No newline at end of file
diff --git a/06-sum/index.js b/06-sum/index.js
index ebc2ee1..911b188 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..4759c1f 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,11 @@
 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..7dd2b77 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,13 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
+  let array = word1.toLowerCase().split('').sort();
+  let array2 = word2.toLowerCase().split('').sort();
+
+  if (word1.length !== word2.length) {
+    return false;
+  } else {
+    if (array.toString() === array2.toString()) {
+      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..12c72d9 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,15 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    const value = text.toLocaleLowerCase().split("").sort();
+
+    let counts = {};
+    value.forEach(function (x) {
+        counts[x] = (counts[x] || 0) + 1;
+    });
+
+    const maior = Object.keys(counts).sort(function (a, b) {
+        return counts[a] > counts[b] ? -1 : counts[b] > counts[a] ? 1 : 0;
+    })[0];
+
+    return maior;
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..08aaea9 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,13 @@
 export function longestWords(words) {
     // implementar logica aqui
-    
+    let maior = "";
+
+    for (const string of words) {
+        if (string.length > maior.length) {
+            maior = string;
+        }
+    }
+    const maiores = words.filter((string) => string.length === maior.length);
+
+    return maiores;
 }
\ No newline at end of file