Quotable maths: Einstein Feb 16, 2012 A selection of other posts Jul 29, 2020 Ask Uncle Colin: A Sum With An Unknown Feb 20, 2019 Ask Uncle Colin: What's $\sqrt{100!}$? Feb 13, 2018 Wrong, But Useful: Episode 53 Dec 5, 2013 Wrong, but Useful: Episode 9 subscribe via RSS