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Bill Nye Demonstration:  The Birthday Paradox

Bill Nye Demonstration: The Birthday Paradox

Author: Bill Nye

Pull off this great trick and wow your friends! I hit the streets and demonstrate that the chances of two people in a small group having the same birthday is extraordinarily high. Check it out!

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Bill Nye Explains the Birthday Paradox

Try it yourself -- the next time you are at a gathering of 20 or 30 people, ask everyone for their birth date. It is likely that two people in the group will have the same birthday. It always surprises people! Here's why...

How Does that Work?

Here is the mathematics behind the calculation. It really isn't that complicated, really.