diff --git a/Chapter_05/5-11_ordinal_numbers.py b/Chapter_05/5-11_ordinal_numbers.py
new file mode 100644
index 0000000..7f860b2
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+++ b/Chapter_05/5-11_ordinal_numbers.py
@@ -0,0 +1,20 @@
+# Exercise 5-11 Ordinal Numbers 
+# Learning Objective: Iterations in a list. 
+
+nums = []
+
+for num in range(1,10):
+	nums.append(num)
+
+print(nums)
+
+for num in nums:
+	if num == 1:
+		print(str(num) + "st")
+	elif num == 2:
+		print(str(num) + "nd")
+	elif num == 3:
+		print(str(num) + "rd")
+	else:
+		print(str(num) + "th")
+