diff --git a/challenge18/challenge18 b/challenge18/challenge18
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+++ b/challenge18/challenge18
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+Subproject commit 447c35fcfc25ca7cdfb4196e8924d06f75d8263e
diff --git a/challenge18/main.text b/challenge18/main.text
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+With GitHub Desktop, you can interact with GitHub using a GUI instead of the command line or a web browser.
+ You can use GitHub Desktop to complete most Git commands from your desktop, such as pushing to, pulling from,
+ and cloning remote repositories, attributing commits, and creating pull requests, with visual confirmation
+ of changes.
diff --git a/challengers-list.md b/challengers-list.md
index 848dec155..e4ad5c221 100644
--- a/challengers-list.md
+++ b/challengers-list.md
@@ -1,3 +1,3 @@
# List of challengers
1. [Shivay](https://github.com/shivaylamba)
-2. [shivscaler](http://github.com/shivscaler)
+[trapti](https://github.com/trapti77)
diff --git a/contributors/trapti77/gist-solution.md b/contributors/trapti77/gist-solution.md
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+++ b/contributors/trapti77/gist-solution.md
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+
+gist solution development link :
diff --git a/contributors/trapti77/trapti77.md b/contributors/trapti77/trapti77.md
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+name:trapti patel
+
+github_user_name:trapti77
+
+url_of_github_issue:https://github.com/scaleracademy/scaler-open-source-september-challenge/issues/502#issue-1879149817
+
+your_favroite_programming_language:c++ and python.
+your_hosted_github_pages_link: https://trapti77.github.io/
+your_hosted_github_pages_repository_link:https://github.com/trapti77/trapti77.github.io
diff --git a/contributors/trapti77_2.md b/contributors/trapti77_2.md
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+++ b/contributors/trapti77_2.md
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+My name is trapti patel.
+I am very exited that i am contribute at scaler-open-source-september-challenges.
+I have done my 6 challenges and this is my 7th challenges that I try to complete
+quickly.
\ No newline at end of file
diff --git a/merge_conflict_problem b/merge_conflict_problem
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+Subproject commit 684f16a33e0445375a7967af3f3e2416d9e62bec
diff --git a/scaler-open-source-september-challenge b/scaler-open-source-september-challenge
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+++ b/scaler-open-source-september-challenge
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+Subproject commit 389813fcd5872aabdd274565406a77b4d67a0d58