[中學] 排列組合
八個人 四對夫妻坐圓桌
兩對要坐對面
兩對要相鄰
請問有幾種排法呢??
想好久想不出來~"~
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※ 編輯: jcsbmwxyha 來自: 114.37.76.21 (04/24 17:23)
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