You meet someone at a party and you're stunned to discover you share the same birthday. Or perhaps you're sitting in a beach bar in Bali when an old school friend strolls past with a cocktail.

If you are in a room with 22 other people, it’s more likely than not that two of them share a birthday. There was something strange about the recent Women's World Cup in Australia. If you were paying ...

(via SciShow) There's a rather famous problem in math of probability called the Birthday Paradox. Let's get into how it works, and how creative uses of this hypothetical problem have real-world ...

How many people need to be in a room before there's a greater probability than chance that two of them share a birthday? Numberphile approaches the famous birthday paradox without a computer.