https://radioastron.groups.et.byu.net/dokuwiki/ 2026-05-21T13:27:34-0600 https://radioastron.groups.et.byu.net/dokuwiki/ https://radioastron.groups.et.byu.net/dokuwiki/lib/tpl/byu_2017_theme/images/favicon.ico text/html 2015-01-21T12:39:26-0600 Anonymous (anonymous@undisclosed.example.com) https://radioastron.groups.et.byu.net/dokuwiki/doku.php?id=wiki:donuts:winter2015:lockers:answer&rev=1421869166&do=diff Answer There will be 10 lockers left open: #1, #4, #9, #16, #25, #36, #49, #64, #81, and #100. For any locker k, you will visit that locker on any pass n which happens to be a factor of k (i.e. you will visit #12 on passes 1, 2, 3, 4, 6, and 12). Because factors always come in pairs, you should visit each locker an even number of times. However, numbers which do not have an even number of