Two hundred multiples of seven are chosen at random, and 300 multiples of eight are chosen at random. Approximately what percent

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问题 Two hundred multiples of seven are chosen at random, and 300 multiples of eight are chosen at random. Approximately what percentage of the 500 selected numbers are odd?

选项 A、20%
B、25%
C、40%
D、5O%
E、80%

答案A

解析 All multiples of 8 are even, and half of the multiples of 7 are odd; the multiples of 7 make up 2/5 of the total, so if 1/2 of those multiples of 7 are odd, then 1/5 of the total will be odd, or 20%.

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Two hundred multiples of seven are chosen at random, and 300 multiples of eight are chosen at random. Approximately what percent

GMAT QUANTITATIVE

GMAT

Ifit______tomorrow,thebasketballmatchhastobecanceled.

Notalways______theywantto.

Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincludethebasicnecessitiesoflifesuchasfood,clo

IfthereisonethingI’msureabout,itisthatinahundredyearsfromnowwewillstillbereadingnewspapers.Itisnottha

______iswellknowntoall,Chinawillbeanadvancedandpowerfulcountryinthenearfuture.

TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother

Nomatterwhoyouareorwhereyoucomefrom,onethingiscertain:youareacquaintedwiththemosquito(蚊子)—althoughyouprobab

Doyouknowwho______firetothatDepartmentStore?

Scientistssaidtheyhavefoundevidenceofagiantplanetfaroutinoursolarsystem.Inastatement,theCaliforniaInstitute

Allthefollowingcasesareon-the-jobsmokingexceptthat______.Inthesecondpartofthepassage,theauthorsuggestsbannin

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A．银翘散B．千金苇茎汤C．桑白皮汤D．加味桔梗汤E．沙参清肺汤肺痈之初期，当选

下列物质跨膜转运属于通道中介的易化扩散的是

A、脓肿B、实肿C、痰肿D、风肿E、瘀血肿肿势软如棉或硬如馒，大小不一，形状各异，无处不生，不红不热，皮色如常，辨为

肝硬化患者出现血性腹水最有可能合并的疾病是：

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