diff --git a/10_Day/10_day_Set_and_Map.md b/10_Day/10_day_Set_and_Map.md
index 65067c9..24f380b 100644
--- a/10_Day/10_day_Set_and_Map.md
+++ b/10_Day/10_day_Set_and_Map.md
@@ -43,7 +43,7 @@
 
 ## Set
 
-Set is a collection a collection of elements. Set can only contains unique elements.
+Set is a collection of elements. Set can only contains unique elements.
 Lets see how to create a set
 
 ### Creating an empty set