diff --git a/src/index.js b/src/index.js
index d54b3622..5fdbc17d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,12 +1,29 @@
 
 exports.min = function min (array) {
-  return 0;
+  if(array==undefined || array.length==0){
+    return 0;
+  }
+  else{
+      return Math.min(...array);
+  }
 }
 
 exports.max = function max (array) {
-  return 0;
+  if(array==undefined || array.length==0){
+    return 0;
+  }
+  else{
+      return Math.max(...array);
+  }
 }
 
 exports.avg = function avg (array) {
-  return 0;
+  
+  if(array==undefined || array.length==0){
+    return 0;
+  }
+  else{
+    const reducer = (accumulator, currentValue) => accumulator + currentValue;
+    return (array.reduce(reducer))/(array.length);
+  }
 }