GMAT數學邏輯練習題
GMAT是Graduate Management Admission Test的縮寫,中文名稱爲經企管理研究生入學考試。以下是yjbys網小編整理的關於GMAT數學邏輯練習題,供大家備考。
練習題一:
DS:What is the value of|x| ?
(1) x=-|x|
(2) x^2 = 4
邏輯
Three large companies and seven small companies currently manufacture a product with potential military applications. If the government regulates the industry, it will institute a single set of manufacturing specifications to which all ten companies will have to adhere. In this case, therefore, since none of the seven small companies can afford to convert their production lines to a new set of manufacturing specifications, only the three large companies will be able to remain in business.
Which of the following is an assumption on which the author's argument relies?
A None of the three large companies will go out of business if the government does not regulate the manufacture of the product.
B It would cost more to convert the production lines of the small companies to a new set of manufacturing specifications than it would to convert the production lines of the large companies.
C Industry lobbyists will be unable to dissuade the government from regulating the industry.
D Assembly of the product produced according to government manufacturing specifications would be more complex than current assembly procedures.
E None of the seven small companies currently manufactures the product to a set of specifications that would match those the government would institute if the industry were to be regulated.
數學
答案:B
邏輯
答案:E
三小七大公司生產軍品,現在政府開始規範這個行業,所以出臺了生產製造標準。
因爲小公司都沒錢把自己的生產線弄成符合標準的,所以結論是隻有大公司可以存在。
反駁:小公司沒錢標準化生產不代表他們的產品不符合規定!
A, 說的是如果政府不出臺法規所產生什麼結果,範圍不對,殺;
B,說轉換生產線小公司比大公司花錢多,無此比較,殺;
C,說遊說者不能說服政府不要管這個行業,無關,殺;
D,新規定上產品的裝配會更復雜,沒說過,殺;
E,如果政府出臺法規,七所小公司現在生產的產品不能夠滿足政府要求,
---文章中反覆談的就是能否滿足要求的問題,靠譜,留着。
邏輯鏈: no match---->MUST convert--->can't afford--->out of the business
使得前提變唯一則文中的前提必然推得結論
假設題中,絕大部分的'考題都是選項中含有否定詞的爲正確選項,取非後能駁斥原文的爲對。
練習題二:
【數學】
The number ofstamps that Kaye and Alberto had were in the ratio 5 : 3, respectively. After Kaye gave Alberto 10 of her stamps, theratio of the number Kaye had to the number Alberto had was 7 :5. As a result of this gift,Kaye had how many more stamps than Alberto?
(A) 20
(B) 30
(C) 40
(D) 60
(E) 90
【邏輯】
Amphibian populations are declining innumbers worldwide. Not coincidentally, the earth’s ozone layer has beencontinuously depleted throughout the last 50 years. Atmospheric ozone blocksUV-B, a type of ultraviolet radiation that is continuously produced by the sun,and which can damage genes. Because amphibians lack hair, hide, or feathers toshield them, they are particularly vulnerable to UV-B radiation. In addition,their gelatinous eggs lack the protection of leathery or hard shells. Thus, theprimary cause of the declining amphibian population is the depletion of theozone layer.
Each of the following, if true, wouldstrengthen the argument EXCEPT:
A. Ofthe various types of radiation blocked by atmospheric ozone, UV-B is the onlytype that can damage genes.
B. Amphibianpopulations are declining far more rapidly than are the populations ofnon-amphibian species whose tissues and eggs have more natural protection fromUV-B.
C. Atmosphericozone has been significantly depleted above all the areas of the world in whichamphibian populations are declining.
D. Thenatural habitat of amphibians has not become smaller over the past century.
E. Amphibianpopulations have declined continuously for the last 50 years.
【數學】
題目翻譯:kaye 和 alberto 的郵票數之比爲 5比 3,當 kaye 給 alberto10 張郵票,郵票數之比爲 7比 5 ,kaye 比 alberto 多幾張郵票?
思路點撥:列二元一次方程,分別設 kaye 和 alberto 的郵票數爲 X 和 Y。 x/y=5/3, (x-10)/(y+10)=7/5,解方程即可。
Caution!:記得求出 X 和 Y 之後要相減
【邏輯】
答案:D
思路:原文論述臭氧層的破壞造成UV-B輻射過量是導致兩棲動物數量減少的主要原因。
A:支持說明爲什麼是UV-B而不是其他原因。
B:支持說明爲什麼UV-B會降低兩棲動物的數量。
C:提供空間論據說明臭氧層受損和兩棲動物數量減少的相關性。
D:中性評價。不Weaken也不Strengthen.
E:提供時間論據說明臭氧層受損和兩棲動物數量減少的相關性。
技巧:做EXCEPT題如果答案中出現原文沒有的專有名詞(地名和人名等)一般就選它。
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