Core 4 basics revision quiz Mar 19, 2013 [mtouchquiz 2] A selection of other posts Nov 7, 2016 How do you estimate the normal distribution for large $z$? Jan 11, 2016 How the Mathematical Ninja estimates factorials Aug 31, 2015 The Mathematical Ninja and Ailles' Rectangle Jun 5, 2013 The butterfly isn't to blame subscribe via RSS