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标题: paint a cube with 6 different colors, one face one [打印本页]
作者: HF: 时间: 2008-4-19 17:51
标题: paint a cube with 6 different colors, one face one
color, how many ways to do that?
www.ddhw.com
作者: 细粉丝 时间: 2008-4-21 01:36
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作者: husonghu 时间: 2008-4-21 01:57
标题: 回复:回复:paint a cube with 6 different colors, one fa
作者: 学生 时间: 2008-4-22 12:17
标题: 回复:paint a cube with 6 different colors, one face
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