Monthly Archives: January 2020

Another dice puzzle

Introduction The dice game craps is played by repeatedly rolling two six-sided dice, and making various wagers on the outcomes of the sequence of rolls. The details of the wagers don’t concern us here– instead, let’s consider just one particular … Continue reading

Posted in Uncategorized | Leave a comment

Tracking a card through a shuffled deck

Introduction Riffle shuffle a deck of cards once. What is the probability that the original top card ends up on the bottom of the shuffled deck (or vice versa)? This is very unlikely… but suppose that we shuffle again… and … Continue reading

Posted in Uncategorized | 4 Comments