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 ${name}`;
 }
diff --git a/02-triangleArea/index.js b/02-triangleArea/index.js
index 7628fcd..8f90bb9 100644
--- a/02-triangleArea/index.js
+++ b/02-triangleArea/index.js
@@ -1,3 +1,4 @@
 export function triangleArea(base, height) { 
   // your code here
+  return ((base * height) / 2);
 } 
\ No newline at end of file
diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..ec4d9e6 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,9 @@
 export function maxValue(values) {
   // implementar logica aqui
-  
+  let maxValor = Math.max(...values);
+    if (values == `${[]}`) {
+      return 0 ;
+    } else {
+        return maxValor;
+    }
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..5c82af6 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,8 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+  let arr = [ 0, 1 ];
+  for (let i = 2; i < value + 1; i++) {
+      arr.push ( 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..0880725 100644
--- a/05-isPrime/index.js
+++ b/05-isPrime/index.js
@@ -1,4 +1,16 @@
 export function isPrime(value) {
   // implementar logica aqui
-  
+  { if ( value === 1 ) { 
+    return false;
+    } else if ( value === 2 ) { 
+        return true; 
+        } else { 
+            for ( var x = 2; x < value; x++ ) { 
+                if ( value % x === 0 ) { 
+                    return false; 
+                } 
+            } 
+            return true; 
+        } 
+    } 
 }
\ No newline at end of file
diff --git a/06-sum/index.js b/06-sum/index.js
index ebc2ee1..315dafd 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 index = 0; index < values.length; index += 1 ) {
+      soma = soma + values [ index ] ;
+  }
+  return soma;
 }
\ No newline at end of file
diff --git a/07-sumEven/index.js b/07-sumEven/index.js
index bb1e095..c028c98 100644
--- a/07-sumEven/index.js
+++ b/07-sumEven/index.js
@@ -1,4 +1,10 @@
 export function sumEven(value) {
   // implementar logica aqui
-  
+  let soma = 0;
+  for( let index = 0; index < value.length; index += 1 ) {
+      if (value[index] % 2 == 0) {
+          soma = soma + value [ index ] ;
+      }                
+  }
+  return soma;  
 }
\ No newline at end of file
diff --git a/08-isAnagram/index.js b/08-isAnagram/index.js
index 918308a..a27523c 100644
--- a/08-isAnagram/index.js
+++ b/08-isAnagram/index.js
@@ -1,4 +1,11 @@
 export function isAnagram(word1, word2) {
   // implementar logica aqui
-  
-}
\ No newline at end of file
+  if (cleanString(word1) === cleanString(word2)) {
+    return true;
+    } else {
+      return false;
+    };
+}
+  function cleanString(str) {
+    return str.toLowerCase().split('').sort().join();
+  }  
\ No newline at end of file
diff --git a/09-mostRepeatedChar/index.js b/09-mostRepeatedChar/index.js
index b113ed8..8baa82c 100644
--- a/09-mostRepeatedChar/index.js
+++ b/09-mostRepeatedChar/index.js
@@ -1,4 +1,9 @@
 export function mostUsedChar(text) {
     // implementar logica aqui
-    return ""
+    let hashmap = {}, resposta;
+    text.split('').reduce((acumulador, letra) => {    
+    hashmap [ letra ] = hashmap [ letra ] + 1 || 1
+    resposta = hashmap [ letra ] >= acumulador ? letra : resposta
+    return acumulador = hashmap [ letra ] > acumulador ? acumulador + 1 : acumulador }, 1 )
+    return resposta;
 }
\ No newline at end of file
diff --git a/10-longestWords/index.js b/10-longestWords/index.js
index a98d2d8..4eff8ab 100644
--- a/10-longestWords/index.js
+++ b/10-longestWords/index.js
@@ -1,4 +1,11 @@
+import { arrayBuffer } from "stream/consumers";
+
 export function longestWords(words) {
     // implementar logica aqui
-    
-}
\ No newline at end of file
+    let maioresPalavras = "";
+    for ( const word of words ) { 
+        if ( word.length > maioresPalavras.length ) { 
+            maioresPalavras = word; }
+    }  
+    return words.filter ( ( word ) => word.length == maioresPalavras.length ) ;
+  }