[中學] 一題排列組合
星期一到星期四 每天都要有兩人當值日生
現在有6個人 其中甲、乙要當兩天
請問有幾種方法??
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◆ From: 119.14.33.204
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03/29 23:44, , 1F
03/29 23:44, 1F
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03/30 00:05, , 2F
03/30 00:05, 2F
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03/30 00:06, , 3F
03/30 00:06, 3F
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03/30 00:07, , 4F
03/30 00:07, 4F
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03/30 00:15, , 5F
03/30 00:15, 5F
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03/30 00:15, , 6F
03/30 00:15, 6F
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03/30 00:19, , 7F
03/30 00:19, 7F
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03/30 00:31, , 8F
03/30 00:31, 8F
討論串 (同標題文章)