[中學] 排列組合
想請教各位高手這題,感謝大家的提供想法
有十個鎖和十五支鑰匙,且十五支鑰匙中
有十支是這十個鎖的鑰匙,已知現在
鎖與所對應的鑰匙全部弄亂了,
則最多要試幾次才能確定
所有的鎖與鑰匙均能有效配對?
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※ 編輯: begin530 (49.216.210.78), 05/12/2016 01:12:41
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