MATH12Word下载.docx
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MATH12Word下载.docx
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Whatisthegreatestprimefactorof2100-296?
A.2
B.3
C.5
D.7
E.11
Q3:
Howmanylitersofapplejuicewereaddedtothecranberryjuiceinacertaincontainer?
(1)Theamountofapplejuicethatwasaddedwas3/2theamountofcranberryjuiceinthecontainer.
(2)Therewere5litersofcranberryjuiceinthecontainer.
A.Statement
(1)ALONEissufficient,butstatement
(2)aloneisnotsufficient.
B.Statement
(2)ALONEissufficient,butstatement
(1)aloneisnotsufficient.
C.BOTHstatementsTOGETHERaresufficient,butNEITHERstatementALONEissufficient.
D.EACHstatementALONEissufficient.
E.Statements
(1)and
(2)TOGETHERareNOTsufficient.
Answer:
Q4:
Inademographicstudy,thepopulationandtotalincomeofacertainregionwereestimatedfromotherdata,andbothestimateshadlowerandupperlimits.Atthetimeoftheestimates,wasthepercapitaincomefortheregiongreaterthan$16,500?
(1)Thelowerlimitfortheestimateofthepopulationwas330,000people.
(2)Thelowerlimitfortheestimateofthetotalincomewas$5,500,000,000.
Q5:
Isx<
1?
(1)x+1=2x-1
(2)x-3≠0
Q6:
Aboxcontains10lightbulbs,fewerthanhalfofwhicharedefective.Twobulbsaretobedrawnsimultaneouslyfromthebox.Ifnofthebulbsinboxaredefective,whatisthevalueofn?
(1)Theprobabilitythatthetwobulbstobedrawnwillbedefectiveis1/15.
(2)Theprobabilitythatoneofthebulbstobedrawnwillbedefectiveandtheotherwillnotbedefectiveis7/15.
Q7:
Thereare11womenand9meninacertainclub.Iftheclubistoselectacommitteeof2womenand2men,howmanydifferentsuchcommitteesarepossible?
A.120
B.720
C.1,060
D.1,520
E.1,980
Q8:
B
AC
Inthefigureshown,thetriangleisinscribedinthesemicircle.IfthelengthoflinesegmentABis8andthelengthoflinesegmentBCis6,whatisthelengthofarcABC?
A.15
B.12
C.10
E.5
Q9:
If5x=2yandxy≠0,theniswhatpercentofy?
A.2%
B.4%
C.10%
D.40%
E.50%
Q10:
Inthefigureshown,twoidenticalsquaresareinscribedintherectangle.Iftheperimeteroftherectangleis18√2,thenwhatistheperimeterofeachsquare?
A.8√2
C.12√2
D.16
E.18
Q11:
Theproductoftheunitsdigit,thetensdigit,andthehundredsdigitofthepositiveintegermis96.Whatistheunitsdigitofm?
(1)misodd.
(2)Thehundredsdigitofmis8.
Q12:
DivisionRofCompanyQhas1,000employees.Whatistheaverage(arithmeticmean)annualsalaryoftheemployeesatCompanyQ?
(1)TheaverageannualsalaryoftheemployeesinDivisionRis$30,000.
(2)TheaverageannualsalaryoftheemployeesatCompanyQwhoarenotinDivisionRis$35,000.
Q13:
Thesequencea1,a2,…,an,…issuchthatan=2an-1-xforallpositiveintegersn≥2andforcertainnumberx.Ifa5=99anda3=27,whatisthevalueofx?
A.3
B.9
C.18
D.36
E.45
Q14:
BoxWandBoxVeachcontainseveralbluesticksandredsticks,andalloftheredstickshavethesamelength.Thelengthofeachredstickis18incheslessthantheaveragelengthofthesticksinBoxWand6inchesgreaterthantheaveragelengthofthesticksinBoxV.Whatistheaverage(arithmeticmean)length,ininches,ofthesticksinBoxWminustheaveragelength,ininches,ofthesticksinBoxV?
B.6
C.12
D.18
E.24
Q15:
Ifx≠0,then(x+1/x)2-(x-1/x)2=
A.1/x
B.x
C.1
D.2
E.4
Q16:
Ifm,p,andtarepositiveintegersandm<
p<
t,istheproductmptaneveninteger?
(1)t–p=p-m
(2)t–m=16
Q17:
Ifacertaincoinisflipped,theprobabilitythatthecoinwilllandheadsis1/2.Ifthecoinisflipped5times,whatistheprobabilitythatitwilllandheadsuponthefirst3flipsandnotonthelast2flips?
A.3/5
B.1/2
C.1/5
D.1/8
E.1/32
Q18:
Thefunctionfisdefinedbyf(x)=√x–10forallpositivenumbersx.Ifu=f(t)forsomepositivenumberstandu.Whatistintermsofu?
A.√(u+10)
B.(√u+10)2
C.√(u2+10)
D.(u+10)2
E.(u2+10)2
Q19:
y
l
2
-30x
Thegraphofwhichofthefollowingequationsisastraightlinethatisparalleltolinelinthefigureabove?
A.3y–2x=0
B.3y+2x=0
C.3y+2x=6
D.2y–3x=6
E.2y+3x=-6
Q20:
WhatisthetotalnumberofexecutivesatCompanyP?
(1)Thenumberofmaleexecutivesis3/5thenumberoffemaleexecutives.
(2)Thereare4morefemaleexecutivesthanmaleexecutives.
E.Statements
(1)and
(2)TOGETHERareNOTsufficie
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