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 Magic trick (Posted on 2003-05-08)
We have a normal deck of 52 cards. We want to do the following magic trick:

A person from the audience chooses 5 random cards. The magician's assistant looks at the 5 cards, chooses 4 of them, hands them to the magician one by one face up and keeps the other one hidden. The magician then guesses the fifth card (the one that the assistant kept hidden) just by looking at the 4 cards he was handed in.

Is it possible to devise a strategy, so that no matter what the original 5 cards were, the trick always works?

 See The Solution Submitted by Fernando Rating: 3.8571 (14 votes)

 Subject Author Date Stupid solution David 2004-03-31 17:53:35 Best one? Gamer 2003-07-03 14:46:23 Face Up nikki 2003-06-03 12:39:39 Facedown DJ 2003-05-11 15:44:23 re: Lots of Little Somethings DJ 2003-05-11 14:43:07 Lots of Little Somethings DJ 2003-05-11 14:27:30 try this Jon 2003-05-09 06:33:23 my solution Steve 2003-05-08 20:22:05 my solution Cory Taylor 2003-05-08 13:58:51 Restrictions Gamer 2003-05-08 12:01:30 re(3): How i would do it - How it works Chris 2003-05-08 11:44:01 re: Hows dis? levik 2003-05-08 09:17:59 Hows dis? Hank 2003-05-08 09:07:32 Solution: (I don't remember where I saw this but it was in the past year.) Charlie 2003-05-08 07:59:47 re(2): How i would do it - How it works Brian Smith 2003-05-08 07:49:47 re: How i would do it Jon 2003-05-08 07:37:16 How i would do it Brian Smith 2003-05-08 07:34:41 solution corrected Jon 2003-05-08 07:28:18 re: ideas levik 2003-05-08 07:22:46 ideas Jon 2003-05-08 07:12:39

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