diff --git a/03-maxValue/index.js b/03-maxValue/index.js
index e433b31..9000cac 100644
--- a/03-maxValue/index.js
+++ b/03-maxValue/index.js
@@ -1,4 +1,17 @@
 export function maxValue(values) {
   // implementar logica aqui
+  let maior = 0;
   
+  values.map(
+    (element, i) => {
+      if(i === 0)
+        maior = element;
+      
+      if(element > maior)
+        maior = element;
+
+    }
+  );
+
+  return maior;
 }
\ No newline at end of file
diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..ebd1ee5 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,12 @@
 export function fibonacci(value) {
   // implementar logica aqui
+  let a = 0, b = 1, c = value;
+
+   for(let i = 2; i <= value; i++){
+    c = a + b;
+    a = b;
+    b = c;
+  }
   
+  return c;
 }
\ No newline at end of file