Reference
Bannon, John, Dear Mr. Fantasy (2004), available at http://JohnBannonMagic.com
Acknowledgment
I am grateful to John Bannon for giving me permission to describe his trick in this article. The ideas behind this trick were developed and discussed by Henry Dudeney, Bob Hummer, Steve Freeman, Martin Gardner, John Bannon and Lennart Green, as described in Bannon’s book, Dear Mr. Fantasy, published in 2004. For more applications of these ideas, see the online article, “Many Fold Synergies,” http://www.maa.org/columns/colm/cardcolm200603.html by Colm Mulcahy.
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This column is a place for those bits of contagious mathematics that travel from person to person in the community, because they are so elegant, surprising, or appealing that one has an urge to pass them on.
Contributions are most welcome.
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Benjamin, A.T. An Amazing Mathematical Card Trick. Math Intelligencer 32, 37–40 (2010). https://doi.org/10.1007/s00283-009-9123-1
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DOI: https://doi.org/10.1007/s00283-009-9123-1