tag:blogger.com,1999:blog-5406891653120763034.post8633348900534748242..comments2024-01-02T15:31:59.152+01:00Comments on The Mathematics Blog by Nilo de Roock: Numbers divisible by sevennilo de roockhttp://www.blogger.com/profile/15332190734914631351noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5406891653120763034.post-9611541832527473142011-11-13T12:19:57.946+01:002011-11-13T12:19:57.946+01:00I promise i'll write a note / post about it th...I promise i'll write a note / post about it that shows the trick behind it. I think you will like it, as it involves a lot of symmetry. - Do you the symmetry in the numbers above ?nilo de roockhttps://www.blogger.com/profile/15332190734914631351noreply@blogger.comtag:blogger.com,1999:blog-5406891653120763034.post-26741537180054363062011-11-13T04:33:24.072+01:002011-11-13T04:33:24.072+01:00That's hillarious, Sir. Testing divisibility b...That's hillarious, Sir. Testing divisibility by 7 is <a href="http://www.jimloy.com/number/divis.htm" rel="nofollow">extremely tough</a> process.Gaurav Tiwarihttp://wpgaurav.wordpress.comnoreply@blogger.com