The debate about blackjack’s status as a game of luck or skill has raged on for centuries. We know that a variation of blackjack has existed since the seventeenth century based on the writings of ...

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. Two puzzles are presented each week: the Riddler Express for those ...

New probability puzzle from columnist John Allen Paulos. Oct. 3, 2010 — -- During my summer hiatus from Who's Counting, a fascinating new paradox, first noticed by puzzle-meister Gary Foshee, ...