Riddler Guess the Jellies in the Urn This week's Riddler Classic presented a problem about sampling without replacement.
Riddler Case of the Missing Birth Month Riddler Express solution for the problem of an unrepresented birth month for a group of officemates.
Riddler Fibonacci Fun A Riddler Classic problem gives us an excuse to implement and benchmark Fibonacci calculations in Julia.
Riddler Hyperpolarization How many polarized lenses make a quarter turn of polarized light with the most intensity?
Riddler Featured 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 Featured The longest interstate walk Meandering through US states and territories with Julia, never looking back. Well, just their USPS codes.
Riddler Featured 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.
