What time does the clock show? We’d love to hear from you! E-mail us at [email protected] to share your experience. This puzzle ...

Do you guys remember CoolMath Games.com? The website that everyone was able to sneak onto during class because it had "Math" in the title? Cool Math Games is home to some classic flash games that will ...

In recent years a number of clever coin-weighing or ball-weighing problems have aroused widespread interest. Here is a new and charmingly simple variation. You have 10 stacks of coins, each consisting ...