Kirkman's schoolgirl problem

短语

释义与例句

name
  1. 1.

    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.

    数学

词源

Proposed by Rev. Thomas Penyngton Kirkman in 1850.

来源：wiktionary