From da894d7745ef12848b7052fc6b32aa54d4406b79 Mon Sep 17 00:00:00 2001
From: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Date: Sun, 26 Apr 2020 09:51:54 +0000
Subject: [PATCH] updating DIRECTORY.md

---
 DIRECTORY.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/DIRECTORY.md b/DIRECTORY.md
index f7fb6e9b7..045de5f9c 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -142,6 +142,9 @@
   * [Tower Of Hanoi](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/others/Tower%20of%20Hanoi.cpp)
   * [Vector Important Functions](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/others/vector_important_functions.cpp)
 
+## Probability
+  * [Addition Rule](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/probability/addition_rule.cpp)
+
 ## Range Queries
   * [Bit](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/bit.cpp)
   * [Fenwicktree](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/FenwickTree.cpp)