MATH23.docx
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MATH23.docx
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MATH23
Math:
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Q1:
Acertaincompany’sprofitin1996was15percentgreaterthanitsprofitin1995,anditsprofitin1997was20percentgreaterthanitsprofitin1996.Thecompany’sprofitin1997waswhatpercentgreaterthanitsprofitin1995?
A.5%
B.18%
C.33%
D.35%
E.38%
Answer:
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Q2:
Thefunctionfisdefinedforeachpositivethree-digitintegernbyf(n)=2x3y5z,wherex,y,andzarethehundreds,tens,andunitsdigitsofn,respectively.Ifmandvarethree-digitpositiveintegerssuchthatf(m)=9f(v),thenm-v=
A.8
B.9
C.18
D.20
E.80
Answer:
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Q3:
Alexdepositedxdollarsintoanewaccountthatearned8percentannualinterest,compoundedannually.OneyearlaterAlexdepositedanadditionalxdollarsintotheaccount.Iftherewerenoothertransactionsandiftheaccountcontainedwdollarsattheendoftwoyears,whichofthefollowingexpressesxintermsofw?
A.
B.
C.
D.
E.
Answer:
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Q4:
All48seniorsinacertainhighschooltakeoneoftwoEnglishclasses.Whatistheaverage(arithmeticmean)heightoftheseniorsinthisschool?
(1)Intheschool,theaverageheightoftheseniorsintheEnglishclasswiththelargernumberofstudentsis70inches.
(2)Intheschool,theaverageheightoftheseniorsintheEnglishclasswiththesmallernumberofstudentsis
oftheaverageheightoftheseniorsintheotherEnglishclass.
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:
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Q5:
60°
Theparallelogramshownhasfoursidesofequallength.Whatistheratioofthelengthoftheshorterdiagonaltothelengthofthelongerdiagonal?
A.
B.
C.
D.
E.
Answer:
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Q6:
TheoperationΘisdefinedbyxΘy=
+
forallnonzeronumbersxandy.Ifzisanumbergreaterthan1,whichofthefollowingmustbetrue?
I.xΘ(-z)=0
II.zΘ
=1
III.
Θ
=z
A.Ionly
B.IandIIonly
C.IandIIIonly
D.IIandIIIonly
E.I,II,andIII
Answer:
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Q7:
Iftheaverage(arithmeticmean)of5differentnumbersis12,whatisthemedianofthe5numbers?
(1)Themedianofthe5numbersisequalto
ofthesumofthe4numbersotherthanthemedian.
(2)Thesumofthe4numbersotherthanthemedianisequalto45.
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:
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Q8:
ThechargeforasingleroomatHotelPis25percentlessthanthechargeforasingleroomatHotelRand10percentlessthanthechargeforasingleroomatHotelG.ThechargeforasingleroomatHotelRiswhatpercentgreaterthanthechargeforasingleroomatHotelG?
A.15%
B.20%
C.40%
D.50%
E.150%
Answer:
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Q9:
IfSisthesumofalltheintegersfrom1to30,inclusive,whatisthegreatestprimefactorofS?
A.3
B.5
C.29
D.31
E.37
Answer:
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Q10:
Isx (1)Theratioofxtoyis . (2)xy>0 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: ------------------------------------------------------------------------------------------------------------ Q11: Lastyear,ifArturospentatotalof$12,000onhismortgagepayments,realestatetaxes,andhomeinsurance,howmuchdidhespendonhisrealestatetaxes? (1)Lastyear,thetotalamountthatArturospentonhisrealestatetaxesandhomeinsurancewas33 percentoftheamountthathespentonhismortgagepayments. (2)Lastyear,theamountthatArturospentonhisrealestatetaxeswas20percentofthetotalamountthathespentonhismortgagepaymentsandhomeinsurance. 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: ------------------------------------------------------------------------------------------------------------ Q12: Thetotalcostofanofficedinnerwassharedequallybykofthenemployeeswhoattendedthedinner.Whatwasthetotalcostofthedinner? (1)Eachofthekemployeeswhosharedthecostofthedinnerpaid$19. (2)Ifthetotalcostofthedinnerhadbeensharedequallybyk+1ofthenemployeeswhoattendedthedinner,eachofthek+1employeeswouldhavepaid$18. 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: ------------------------------------------------------------------------------------------------------------ Q13: Ismbetween35and75? (1)misbetween40and80. (2)misbetween50and90. 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: ------------------------------------------------------------------------------------------------------------ Q14: Theaverage(arithmeticmean)costperbookforthe12booksonacertaintableiskdollars.Ifabookthatcosts18dollarsisremovedfromthetableandreplacedbyabookthatcosts42dollars,thenintermsofk,whatwillbetheaveragecostperbook,indollars,forthebooksonthetable? A.k+2 B.k–2 C.12+ D.12– E.12k–6 Answer: ------------------------------------------------------------------------------------------------------------ Q15: Thesequencea1,a2,…,an,…issuchthatan=4an–1–3forallintegersn>1.Ifa3=x,thena1= A.4x–3 B.16x–15 C. D. E. Answer: ------------------------------------------------------------------------------------------------------------ Q16: Ifkisapositiveinteger,whatistheremainderwhen2kisdividedby10? (1)kisdivisibleby10. (2)kisdivisibleby4. 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: ------------------------------------------------------------------------------------------------------------ Q17: TobeeligibleforretirementbenefitsattheOmegaCorporation,thesumofanemployee’sage,inyears,andthenumberofyearsofemploymentmustbeatleast70.Ifx,wherex<70,isacertainemployee’sagewhenhiredandyistheminimumnumberofyearsofemploymentrequiredfortheemployeetobeeligibleforretirementbenefits,whichofthefollowingequationsrepresentstherelationshipbetweenxandy? A.xy=70 B.x+y=70 C.2x+y=70 D.x+2y=70 E.2x+2y=70 Answer: ------------------------------------------------------------------------------------------------------------ Q18: 10,000100isequivalenttowhichofthefollowing? I.(1002)(100100) II.100200 III.10400 A.None B.Ionly C.IIIonly D.IIandIIIonly E.I,II,andIII Answer: ------------------------------------------------------------------------------------------------------------ Q19: Foreachpositiveintegern,theintegern*isdefinedbyn*=n2+1.Whatisthevalueofthepositiveintegerk? (1)Whenkisdividedby4,theremainderis1. (2)18≤k*≤36 A.Statement (1)ALONEissufficient,butstatement (2)aloneisnotsufficient. B.Statement
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