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Eight Olympic sprinters ran100 meter dash and finished in following order: A finished before B F finished before Evan Bill finished before Charles Dave finished after Charlesand B Ham finished after G Evan finished before Charles and D G finished After B
Q2. If Ham finishes after Chaeles, then now howmany runner must finish before Chaeles? A. 2. B. 3. C. 4 D. 5. E 6
答案是c=4 问题在于, 由提示1&3推出A&B 在C前, 由提示2&6推出F&E在C前, 然后由提示5得到G在H前,而题目前提定的是C在H前,那么可能出现的情况是FEABGCHD啊,那么C前面应该是5个才对.....
读了几遍,也没有说所有before/after是一个紧贴一个的?
然后在解释里是这么一段we can see only H abd D after C, so that the answer is C: there would be 4 eunners finish before C. 这个...如果only H&D after C,那么8个人, C是第6个,前面应该有5个来着...
原题在这里http://www.qnr.cn/waiyu/lsat/fudao/200910/218829.html |
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