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The probability of finding an adjacent pair in a deck

Published online by Cambridge University Press:  01 August 2016

David Singmaster
David Singmaster*
Affiliation:
Department of Computing and Mathematics, South Bank Polytechnic, London SE1 0AA
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Extract

Robert Harbin, in Waddingtons Family Card Games, gives an item called Prediction. You ask a friend to name two values of cards and to shuffle a deck. Then you bet that his two values will come up together as the deck is turned over. Harbin says he has worked out the odds as 32 to 19 in favour of success— “but I could be wrong. See what you make it.”

Type
Research Article
Information
The Mathematical Gazette , Volume 75 , Issue 473 , October 1991 , pp. 293 - 299
Copyright
Copyright © The Mathematical Association 1991

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References

Harbin, Robert, Waddingtons Family Card Games, Prediction, p 178. Elm Tree Books (Hamish Hamilton), London (1972).Google Scholar