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1、GRE®QuantitativeReasoning6PracticeQuestionsbPracticeansweringGREQuantitativeReasoningYourgoalsquestionsonyourownforthisbStudyanswersandexplanations,particularlyforchapterquestionsyouansweredincorrectlyhischaptercontainsfoursetsofGREQuantitativeReasoningpract
2、iceques-tions.EachofthefirstthreepracticesetsconsistsofQuantitativeComparisonTquestions,bothtypesofMultiple-choicequestions,andNumericEntryques-tions.Thesethreesetsarearrangedinorderofincreasingdifficulty.Thefirstiseasy,thesecondismedium,andthethirdishard.Thefo
3、urthpracticesetconsistsofDataInterpretationquestionsofvaryinglevelsofdifficulty.FollowingthelastsetisanAnswerKeyforquickreference.Then,attheendofthechapter,youwillfindcompleteexplanationsforeveryquestion.Eachexplanationispresentedwiththecorrespondingquestion,s
4、othatyoucaneasilyseewhatwasaskedandwhatthevariousanswerchoicesorNumericEntryanswerboxeswere.SharpenyourGREQuantitativeReasoningskillsbyworkingyourwaythroughthesequestionsets.FortheDiscretequestionsets,beginwiththeeasysetsandthenmoveontothemediumandhardsets.R
5、eviewtheanswersandexplanationscare-fully,payingparticularattentiontoexplanationsforquestionsthatyouansweredin-correctly.Forthepracticequestionsinthischapter,usethedirectionsthatbeginonthefollowingpage.143GREQuantitativeReasoningPracticeQuestionsGeneralDirect
6、ionsForeachquestion,indicatethebestanswer,usingthedirectionsgiven.Notes:Allnumbersusedarerealnumbers.Allfiguresareassumedtolieinaplaneunlessotherwiseindicated.Geometricfigures,suchaslines,circles,triangles,andquadrilaterals,arenotnecessarilydrawntoscale.Thatis
7、,youshouldnotassumethatquantitiessuchaslengthsandanglemeasuresareastheyappearinafigure.Youshouldassume,however,thatlinesshownasstraightareactuallystraight,pointsonalineareintheordershown,andmoregenerally,allgeometricobjectsareintherelativepositionsshown.Forqu
8、estionswithgeometricfig-ures,youshouldbaseyouranswersongeometricreasoning,notonestimat-ingorcomparingquantitiesbysightorbymeasurement.Coordinatesystems,suchasxy-planesandnumberlines,aredrawntosca
