Kirkman's schoolgirl problem

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English[edit]

English Wikipedia has an article on:
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Etymology[edit]

Proposed by Rev. Thomas Penyngton Kirkman in 1850.

Proper noun[edit]

Kirkman's schoolgirl problem

  1. (mathematics) A problem in combinatorics, in which 15 schoolgirls go walking three abreast for seven days in succession, and must be arranged so that no two walk abreast more than once.
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