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GMAT數(shù)學(xué)邏輯練習(xí)題

　　GMAT是Graduate Management Admission Test的縮寫，中文名稱為經(jīng)企管理研究生入學(xué)考試。以下是yjbys網(wǎng)小編整理的關(guān)于GMAT數(shù)學(xué)邏輯練習(xí)題，供大家備考。

GMAT數(shù)學(xué)邏輯練習(xí)題

　　練習(xí)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(shù)學(xué)

　　答案：B

　　邏輯

　　答案：E

　　三小七大公司生產(chǎn)軍品，現(xiàn)在政府開始規(guī)范這個(gè)行業(yè)，所以出臺(tái)了生產(chǎn)制造標(biāo)準(zhǔn)。

　　因?yàn)樾」径紱]錢把自己的生產(chǎn)線弄成符合標(biāo)準(zhǔn)的，所以結(jié)論是只有大公司可以存在。

　　反駁：小公司沒錢標(biāo)準(zhǔn)化生產(chǎn)不代表他們的產(chǎn)品不符合規(guī)定!

　　A, 說的是如果政府不出臺(tái)法規(guī)所產(chǎn)生什么結(jié)果，范圍不對(duì)，殺;

　　B，說轉(zhuǎn)換生產(chǎn)線小公司比大公司花錢多，無此比較，殺;

　　C，說游說者不能說服政府不要管這個(gè)行業(yè)，無關(guān)，殺;

　　D，新規(guī)定上產(chǎn)品的裝配會(huì)更復(fù)雜，沒說過，殺;

　　E，如果政府出臺(tái)法規(guī)，七所小公司現(xiàn)在生產(chǎn)的產(chǎn)品不能夠滿足政府要求，

　　---文章中反復(fù)談的就是能否滿足要求的問題，靠譜，留著。

　　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(jié)論

　　假設(shè)題中，絕大部分的考題都是選項(xiàng)中含有否定詞的為正確選項(xiàng)，取非后能駁斥原文的為對(duì)。

　　練習(xí)題二：

　　【數(shù)學(xué)】

　　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

　　(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(shù)學(xué)】

　　題目翻譯：kaye 和 alberto 的郵票數(shù)之比為 5比 3，當(dāng) kaye 給 alberto10 張郵票，郵票數(shù)之比為 7比 5 ，kaye 比 alberto 多幾張郵票?

　　思路點(diǎn)撥：列二元一次方程，分別設(shè) kaye 和 alberto 的郵票數(shù)為 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 之后要相減

　　【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(dǎo)致兩棲動(dòng)物數(shù)量減少的主要原因。

　　A：支持說明為什么是UV-B而不是其他原因。

　　B：支持說明為什么UV-B會(huì)降低兩棲動(dòng)物的數(shù)量。