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?

选项

答案Six/6

解析

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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

C类竞赛（非英语专业本科）

大学生英语竞赛（NECCS）

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

C类竞赛（非英语专业本科）

大学生英语竞赛（NECCS）

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