Pprof on Bobby's pagehttps://bobbyphilip.github.io/blog/pprof/Recent content in Pprof on Bobby's pageHugoenCopyright © 2026, Bobby Alex Philip.Mon, 08 Jun 2026 00:00:00 +0000Calculating π from random numbershttps://bobbyphilip.github.io/calculating-%CF%80-from-random-numbers/Mon, 08 Jun 2026 00:00:00 +0000https://bobbyphilip.github.io/calculating-%CF%80-from-random-numbers/<p>Matt Parker of <a href="https://www.youtube.com/@standupmaths">Stand-up Maths</a> fame has a yearly series where he tries to calculate π by various,(sometimes ridiculous) techniques. <a href="https://www.youtube.com/watch?v=lmgCgzjlWO4">This</a> is a personal favourite, where he uses Avogadro&rsquo;s number and it was more accurate than I would have expected. The rest of this post is based on <a href="https://www.youtube.com/watch?v=RZBhSi_PwHU">this</a> video from 2017 and basically boils down to the fact that the probability of two random numbers being co-prime is 6/ π^2. This comes from a famous problem in mathematical analysis called the <a href="https://en.wikipedia.org/wiki/Basel_problem">Basel Problem</a> and was solved by Euler</p>