🌐EnglishEnglishFrançaisTiếng ViệtРусскийالعربيةفارسی한국어日本語EntityQ5150824· pop 8· linked from 102 articlescombinatorial designsymmetric arrangement of finite setsAvailable in 8 languagesFrançaisРусскийالعربيةGreekTiếng ViệtUkrainianفارسیvia Wikidata sitelinks · CC0ConnectionsKirkman's schoolgirl problemEntityBruck–Ryser–Chowla theoremEntityCategoriesCombinatorial designDesign of experimentsFamilies of sets