作业帮sorry,i forget...question:在一个方体的顶点处填上1-9九个数马中的八个，每个顶点只填一个数码，使得正方体每个面上的四个顶点上所填的数码之和均为18，则未被填上的数是？
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sorry,i forget...question:在一个方体的顶点处填上1-9九个数马中的八个，每个顶点只填一个数码，使得正方体每个面上的四个顶点上所填的数码之和均为18，则未被填上的数是？
sorry,i forget...
question:在一个方体的顶点处填上1-9九个数马中的八个，每个顶点只填一个数码，使得正方体每个面上的四个顶点上所填的数码之和均为18，则未被填上的数是？
sorry,i forget...question:在一个方体的顶点处填上1-9九个数马中的八个，每个顶点只填一个数码，使得正方体每个面上的四个顶点上所填的数码之和均为18，则未被填上的数是？
9
你想想啊：9+9=18,那你就想办法凑九就行了呗,有6+3=9；2+7=9；1+8=9；4+5=9.惟独没用到九,所以当然答案是九了~
题目呢~！拿出来撒~！你要我们怎么做啊~！
9啊，因为9+9＝18
而需要四个数加起来才达到十八，所以9是不选择的数
题呢??
没题怎么回答啊
？问题呢？？快拿出来
倒，耍我们啊，进来越来越郁闷了～
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