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标题: 问一道JJ逻辑题 - teenager买车 [打印本页]

作者: hondas 时间: 2007-9-10 05:35
标题: 问一道JJ逻辑题 - teenager买车

说Ｐ这个人说：我们这里的ｔｅｅｎａｇｅｒｓ都不买一种车（用Ｘ代替吧）
然后Ｓ这个人说：那说明我们这里的ｓａｆｅｓｔｄｒｉｖｅｒ基本不是ｔｅｅｎａｇｅｒ
问如果要使两个人的说法都正确，下列哪项是对的？

a) “说明ｍａｎｙ　ｓａｆｅｓｔ　ｄｒｉｖｅｒｓ会买Ｘ这种车”。

b) Ｘ车是ｓａｆｅ　ｃａｒ

作者: Whitney 时间: 2007-9-11 09:19
P's statement equals to => X car-buyers are not teenagers;
S=>All safetest drivers are not teenagers;
如果要使两个人的说法都正确, then there must be some overlap between P and S. Another word that some safetest drivers(>0) are X buyers.

a) many safetest drivers (>0) buy X. => There is overlap between P and S. So a) is sufficient.
b) Safe car just out of scope.

作者: hondas 时间: 2007-9-11 11:41

多谢指点

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