2. 外语
  3. At a business meeting each person shook hands with every other person exactly once.If there were fifteen handshakes, how many pe

At a business meeting each person shook hands with every other person exactly once.If there were fifteen handshakes, how many pe

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问题 At a business meeting each person shook hands with every other person exactly once.If there were fifteen handshakes, how many people attended the meeting?
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答案Six/6
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本试题收录于： C类竞赛（非英语专业本科）题库大学生英语竞赛（NECCS）分类
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C类竞赛（非英语专业本科）

大学生英语竞赛（NECCS）

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