diff --git a/Chapter 8/Exercise 8.3 b/Chapter 8/Exercise 8.3
new file mode 100644
index 0000000..b2e5c0e
--- /dev/null
+++ b/Chapter 8/Exercise 8.3	
@@ -0,0 +1,8 @@
+const myArr = [1,4,5,6];
+const myArr1 = myArr.map(function(ele){
+    return ele * 2;
+});
+console.log(myArr1);
+
+const myArr2 = myArr.map((ele)=> ele*2);
+console.log(myArr2);