
排列比赛
Authored by chia tl
Mathematics
9th - 12th Grade
Used 3+ times

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17 questions
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1.
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1 min • 1 pt
七个人排队,要求甲一定要夹在乙和丙之间,有几种排法?
2.
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1 min • 1 pt
今天会举行五场羽球赛,甲要对这五场球赛进行预测,问共有几种预测
3.
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1 min • 1 pt
求20000到70000之间有多少个偶数,数字不可重复。比如35698
4.
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1 min • 1 pt
现在有10个空位,甲乙丙丁四人入座,要求他们要隔开,几种坐法?
5.
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1 min • 1 pt
丢五个不同的dice,要求只有一个dice显示“6”,问有几种情况?比如:36221
6.
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1 min • 1 pt
7.
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1 min • 1 pt
将cocoon一字排列,要求两个o在一起,另一个o隔开,比如:occoon, 有几种排法
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