IFLScience needs the contact information you provide to us to contact you about our products and services. You may unsubscribe from these communications at any time.

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 ...

Your guides to the weird side of the web explain the Monty Hall problem and the math of probability.

In the famous Monty Hall problem, you’re presented with three closed doors and asked to pick the one that hides a prize. One door -- not the one you chose -- is opened to reveal...no prize. You may ...