User talk:90.218.203.228

February 2022
Hello, I'm A09090091. I noticed that you made a change to an article, Collatz conjecture, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. A09090091 (talk) 16:00, 27 February 2022 (UTC)