9786 /www/nrich/html/content/id/9786/ 3 2013-01-16T12:42:24 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0"><a href="https://nrich.maths.org/admin/tagedit.php?obj_id=9786">tag edit</a></mdoxml> 2 3 0 0 0 0 1 Have you made an interesting discovery in mathematics? Want to share your investigation? Here is the place to do it