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Red Card, Green Card

The Puzzler


RAY: Here's the answer. When the game started, before anyone did anything, there were equal chances of getting either red or green because there were three green faces and three red faces.

TOM: Right.

RAY: But now you know that card you turned over isn't the "green, green" card. So, there is really only one green face left. And there are two red faces left!

TOM: So you're saying the chances of winning are two to one in favor of red?

RAY: Believe it or not. You can believe it because what you're dealing with is not cards-- you're dealing with the sides. When you see the red side up, you could be seeing one or the other face of the red card. That's what most people don't grasp-- and that's why this guy became a millionaire playing this game in California.

[ Car Talk Puzzler ]

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