求解11/12/14题

来源：蜘蛛抓取(WebSpider) 时间：2015-03-19 14:45 标签： 11 12月旅游
11 12 14题_百度知道The page is temporarily unavailable
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▉游客军团48
裂项法：1/10*11+1/11*12+1/12*13+1/13*14+1/14*15=1/10-1/11+1/11-1/12+1/12-1/13+1/13-1/14+1/14-1/15=1/10-1/15=1/30
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