2. 外语
  3. Can you find the missing value on the roof of the following house? Each of the numbers on the windows and door must be used only

Can you find the missing value on the roof of the following house? Each of the numbers on the windows and door must be used only

admin2011-02-05  47
问题 Can you find the missing value on the roof of the following house? Each of the numbers on the windows and door must be used only once and no number can be reversed.
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答案175
解析 310=(17+14)×10，即：两个窗户的数字相加再乘以门上的数字，因此很容易算出屋顶上的数字为175。  
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本试题收录于： B类竞赛（英语专业本科专科）题库大学生英语竞赛（NECCS）分类
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B类竞赛（英语专业本科专科）

大学生英语竞赛（NECCS）

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