Silly questions amnesty Dec 7, 2012 It’s the first Silly Questions Amnesty of December - what’s on your mind? A selection of other posts Sep 19, 2017 Wrong, But Useful: Episode 48 Apr 26, 2017 Ask Uncle Colin: how big do the patches on a football need to be? May 5, 2014 Finding constants for a line or curve - Secrets of the Mathematical Ninja Jun 6, 2012 A neat number trick: digital roots and modulo-9 arithmetic subscribe via RSS