WSJ's Varsity Math is a weekly dose of challenging puzzles, created by the National Museum of Mathematics. The museum's Glen ...

Imagine that you have three boxes: one containing two black marbles, another containing two white marbles and a third ...

Nonfatal derangement can be a means as well as an end of art, so artists have always been interested in games, one of the ...

The Midland Mall is about to build its newest attraction: a four-story playground that can handle about a hundred kids at a ...

We’d love to hear from you! E-mail us at [email protected] to share your experience. This puzzle originally appeared in Spektrum der Wissenschaft and was reproduced with permission. Hans-Karl Eder ...