User talk:121.200.54.211

October 2019
Hello. This is a message to let you know that one or more of your recent contributions, such as the edit you made to Numerical method, did not appear constructive and has been reverted. Please take some time to familiarise yourself with our policies and guidelines. You can find information about these at our welcome page which also provides further information about contributing constructively to this encyclopedia. If you only meant to make test edits, please use the sandbox for that. If you think I made a mistake, or if you have any questions, you may leave a message on my talk page. Thank you. ubiquity (talk) 13:28, 18 October 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

November 2021
Hello, I'm RainbowLover334148. I wanted to let you know that one or more of your recent contributions&#32;to Green marketing have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. RainbowLover334148 (talk) 12:00, 22 November 2021 (UTC)