diff --git a/Chapter 5/Exercise 5.7 b/Chapter 5/Exercise 5.7
new file mode 100644
index 0000000..4d306ce
--- /dev/null
+++ b/Chapter 5/Exercise 5.7	
@@ -0,0 +1,16 @@
+const obj = {
+    a: 1,
+    b: 2,
+    c: 3
+};
+for (let prop in obj) {
+    console.log(prop, obj[prop]);
+}
+const arr = ["a", "b", "c"];
+for (let w = 0; w < arr.length; w++) {
+    console.log(w, arr[w]);
+}
+ 
+for (el in arr) {
+    console.log(el, arr[el]);
+}