【跪求】两道假设题

0o小猪o0 · 发表于 2009-11-10 21:16:16

刚开始复习逻辑做的是陈向东的《GMAT 逻辑推理》遇到了点问题求助各位XDJM

Census data for Prenland show that unmarried Prenlandic men in their thirties outnumber unmarried Prenlandic women in that age group by about ten to one.Most of these men do wish to marry.Clearly,however,unless many of them marry women who are not Prenlandic,all but a minority will remain unmarried.

The argumnt maks which of the following assumptions?

A. Emigration from Prenland is more common among womon than among men.

B. A greaeter proportion of Prenlandic women in their thirties than of Prenlandic men of the same age would prefer to remain unmarried.

C. It is unlikely that many of these unmarried Prnlandic men will marry women more than a few yeears older than themselvs.

D. Prenland has a high rate of divorce.

E. Most of the unmarried Prenlandic men are unwilling to marry women who are not Prenlandic.

答案选C。我不理解。我觉得C取非后是“Prenland的男性愿意和比他们大几岁的女性结婚”，这个能推出“所以他们大部分不会独身”？

The workers at Bell Manufacturing will shortly go on strike unless the management increases their wages.As Bell’s president is well aware,however,in order to increase the workers’wages,Bell would have to sell off some of its subsidiaries.So,some of Bell’s subsidiaries will be sold.

The conclusion above is proprly drawn if which one of the following is assumed?

A. Bell Manufacturing will begin to suffer increased losses.

B. Bell’s management will reefuse to increase its workeers’ wages.

C. The workers at Bell Manufacturing will not be going on strike.

D. Bell’s prsident has the authority to offer the workers their dsired wage increase.

E. Bell’s workers will not accept a package of improved benefits in place of their dsired wage increase.

答案选C。我选的是E.我觉得E是说明只有涨工资的唯一可行性。我觉得C是由段落推出来的conclusion,而不是assumption.

genius_fang · 发表于 2009-11-12 00:27:41

第一题楼主理解错啦！all but是除了的意思，就是说出了一小部分人以外，其他的依然单身~~~不是一小部分单生的意思！
第二题按照逻辑关系理解，我觉得不是很好理解，因为不罢工推出涨工资，涨工资推出卖掉子公司，所以不罢工是卖掉子公司的充分条件，原文的结论是卖掉公司，所以假设就是工人不会继续罢工，如果这个假设不成立，那前面的推导就全部推翻了~~~但是E我觉得也有道理，不是很清楚，这道应该是LSAT的题目，陈向东那本书里面好多都是LSAT得题目，有些题目我觉得蛮难的！呵呵~

0o小猪o0 · 发表于 2009-11-12 18:48:22

谢谢啦

sdcar2010 · 发表于 2011-3-24 09:45:31

The second assumption question is an old LSAT question and it asks for a SUFFICIENT assumption, which would lead all the way to the conclusion of the stimulus.

Premise:
1) no wage increase --> workers will strike
2) wage increase --> sell off some subsidiaries

Conclusion:
Bell will sell some subsidiaries.

The contrapositive of premise 1) is:
no strike --> wage increase, therefore the logic chain is
no strike --> wage increase--> sell off some subsidiaries

Based on this logic chain, either "no strike" or "wage increase" would be a trigger for "sale of some subsidiaries."

Among the answer choices, C simply picks the former as the correct sufficient assumption.

Remember: sufficient condition --> necessary condition. If you understand this simply logic, there is nothing in your way to solve logical reasoning problems.

imstephanie · 发表于 2011-3-24 14:09:50

对于第一题我有些疑问，

这题的假设
unmarried Prenlandic men outnumber unmarried Prenlandic women
unmarried Prenlandic men are willing to get married.

结论
unmarried Prenlandic men have to marry women who are not Prelandic to get rid of single status.

所以logic chain是
unmarried Prenlandic women are not enough->men do want to marry --> men have to marry women who are not Prenlandic.

C讲的是Prenlandic men are unlikely to marry women a few years older. 但这年龄跟娶not Prenlandic women有什么关系啊？

sdcar2010 · 发表于 2011-3-24 20:32:42

Because the stimulus mentioned "in their 30's" and "the same age group."

b232126660 · 发表于 2012-5-24 11:38:18

关系在于unmarrired men 可以marry unmarried women in different age group, 如果是这样，同在Prenland的其他age group 的women就可能可以满足这些unmarried men, 他们就不许要marry 其他地方的人。
但我觉得问题在于答案这个assumption 不全面，应该说 unmarried P men are unlikey to marry those in different age group才全面。当然答案的assumption是能说得通这个argument的，所以选它

【跪求】两道假设题

所属分类: GMAT考试

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