Why do wet clothes dry?
We discuss the second law of thermodynamics, the notion of entropy, the statistical nature of the situation, and why wet clothes dry.
probabilities
When and why do you multiply probabilities?
At high school you may have been taught that, sometimes, you have to multiply probabilities. We briefly discuss when and why you do this.
The riddle of birthdays
Probabilities can be hard to grasp. For instance, what are the chances that among a birthday party’s attendants two or more people will have their birthdays on the same day? Probably better than you might expect.