海翔gmat数学课程(陈文彬)

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1、此讲义为海翔陈文彬老师的视频课程讲义　　具体课程地址：http://www.flybeyondsea.com/xyzq_3.htm　　　　Q1:　Acertainrollercoasterhas3cars,andapassengerisequallylikelytorideinany1ofthe3carseachtimethatpassengerridestherollercoaster.Ifacertainpassengeristoridetherollercoaster3times,whatistheprobabilitythatthepassengerwillr

2、ideineachofthe3cars?　　　　A.0　　B.1/9　C.2/9　D.1/3　　　E.1　　　Answer:-------------------------------------------------------------------------------------------------------　　　Q2:　In1997therewere300femaleemployeesatCompanyC.IfthenumberoffemaleemployeesatCompanyCincreasedby60percentfrom1977to198

3、7,bywhatpercentdidthenumberoffemaleemployeesatCompanyCincreasefrom1987to1997?　(1)From1977to1997thenumberoffemaleemployeesincreasedby200percentatCompanyC.　(2)In1977therewere100femaleemployeesatCompanyC.　　　A.Statement(1)ALONEissufficient,butstatement(2)aloneisnotsufficient.　　　B.Statement(

4、2)ALONEissufficient,butstatement(1)aloneisnotsufficient.　C.BOTHstatementsTOGETHERaresufficient,butNEITHERstatementALONEissufficient.　　　D.EACHstatementALONEissufficient.　　E.Statements(1)and(2)TOGETHERareNOTsufficient.　　　Answer:　　-----------------------------------------------------------

5、--------------------------------------------　Q3:　　　Agardenerisgoingtoplant2redrosebushesand2whiterosebushes.Ifthegardeneristoselecteachofthebushesatrandom,oneatatime,andplanttheminarow,whatistheprobabilitythatthe2rosebushesinthemiddleoftherowwillbetheredrosebushes?　　　A.1/12　　B.1/6　　　C.1

6、/5　　D.1/3　E.1/2　Answer:-------------------------------------------------------------------------------------------------------　　　Q4:　　If1050–74iswrittenasanintegerinbase10notation,whatisthesumofthedigitsinthatinteger?　　　A.424　　B.433　C.440　　　D.449　　E.467　　Answer:　------------------------

7、------------------------------------------------------------------------------------　　　Q5:　　　Ifwandcareintegers,isw>0?　(1)w+c>50　(2)c>48　　　　　　A.Statement(1)ALONEissufficient,butstatement(2)aloneisnotsufficient.　B.Statement(2)ALONEissufficient,butstatement(1)aloneisnotsufficient