Riddler Happy birthday to you! And you! And … you! Calculate the probability of having a three-fold birthday collision. More than 50% more difficult than your ordinary birthday collision!
Riddler The longest interstate walk Meandering through US states and territories with Julia, never looking back. Well, just their USPS codes.
Riddler Am I going to win the U.S. Open? Estimating the probability of winning the US Open men's and women's tournaments with Julia code and a toy model. Also an increasingly large (as I write this) exposition of Bayesian methods.