#kirkman's_schoolgirl_problem
Kirkman's schoolgirl problem
Combinatorics problem proposed by Thomas Penyngton Kirkman
Kirkman's schoolgirl problem is a problem in combinatorics proposed by Thomas Penyngton Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary (pg.48). The problem states: Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily so that no two shall walk twice abreast.
Fri 30th
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