Links: Some Maths to Look At

Just links to a couple of mathematics posts that I thought were interesting:

Combinatorics and More: Two puzzles which sound like they involve some work, but in fact both use the same trick to make them very easy. (Another puzzle which has a hard way and an easy way is the Two Trains Problem)

Bright Bubble: Euler’s solution of the Basel problem (finding the sum of inverse squares). Euler’s way of doing things are always worth a look.

Math Less Traveled: Proof that pi is irrational, broken up into lots of small and easily readable articles.

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