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====== Red/Black Relationship Principle ====== | ====== Red/Black Relationship Principle ====== | ||
- | This principle makes use of the fact that there is an equal number of red and black cards in the deck. Thus when two piles are formed, one with x cards and the remainder with 52-x cards, then the number of red cards in x equals the number of black cards in the remainder plus 26-x. A special case is that the two piles are equal with 26 cards each, since in that case 26-x=0 and thus the red cards in one half equal the black cards in the other half. | + | This principle makes use of the fact that there is an equal number of red and black cards in the deck. Thus when two piles are formed, one with x cards and the remainder with 52 - x cards, then the number of red cards in x equals the number of black cards in the remainder plus 26 - x. A special case is that the two piles are equal, with 26 cards each, since in that case 26 - x = 0 and thus the red cards in one half equal the black cards in the other half. |
- | The roots of the trick cam be found in an old puzzle involving the literal mixing of wine and water. | + | The roots of the trick can be found in an old puzzle involving the literal mixing of wine and water. |
- | In 1939, Oscar Weigle published "The Little Star Prediction" | + | Oscar Weigle published "The Little Star Prediction" |
- | Robert Hummer made use of the principle, in expectedly unusual ways. See "The Magic Separation" | + | Robert Hummer made use of the principle, in expectedly unusual ways. See [[http:// |
- | Another early use is Warren Wiersbe' | + | Another early use is Warren Wiersbe' |
- | The earliest use with unequal packets might be Roy Walton' | + | The earliest use with unequal packets might be Roy Walton' |
- | See also Arthur MacTier' | + | See also Arthur MacTier' |
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