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Puzzled
Understanding relationships among numbers
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Source
Communications of the ACM archive
Volume 52 ,  Issue 5  (May 2009) table of contents
Security in the Browser
COLUMN: Last byte table of contents
Pages 112-112  
Year of Publication: 2009
ISSN:0001-0782
Author
Peter Winkler  Dartmouth College, Hanover, NH
Publisher
ACM  New York, NY, USA
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ABSTRACT

Welcome to three new challenging mathematical puzzles. Solutions to the first two will be published next month; the third is as yet (famously) unsolved. In each puzzle, the issue is how numbers interact with one another.