Update README.md

amruthamanoj · web-flow · commit a25a252c7c71 · 2019-11-04T20:02:07.000+05:30
diff --git a/README.md b/README.md
@@ -9,7 +9,7 @@ Includes:
 1)Sets
 2)Binomial Theorem
 3)Permutations
-3)Combinations
+4)Combinations
      4.a) Dealing with duplicates
      4.b) Combinations with repetitions
 
