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Rainbow Necklace Trick
by Serhiy Grabarchuk

You have the seven cards with a many-colored necklace on each of them. Ask someone to choose any two-colored bead from any necklace, and then ask to turn over all cards without chosen bead (for this simply click each of these cards). After a single peek at the cards you may say exactly which bead was chosen. How do you think you can perform it?

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Last Update
August 31 2003

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