已选分类
管理学
单选题If x, y and z are non-zero numbers such that 1≥y＞x and xy=z, which of the following cannot be true?
单选题Iftaxifareswere$1.00forthefistmileand$0.20foreachmilethereafter,thenthetaxifarefora3-mileridewas
单选题Onthedayoftheperformanceofacertainplay,eachticketthatregularlysellsforlessthan$10,00issoldforhalfpriceplus$0.50,andeachticketthatregularlysellsfor$10.00ormoreissoldforhalfpriceplus$1.00.Onthedayoftheperformance,apersonpurchasesatotalofytickets,ofwhichxregularlysellfor$9.00eachandtherestregularlysellfor$12.00each.Whatistheamountpaid,indollars,fortheytickets?(A)7y-2x(B)12x-7y(D)7y+4x(E)7y+5x
单选题Questionsrefertothefollowinggraphs.SALESANDEARNINGSOFCOMPANYX
单选题At a certain university, if 50 percent of the people who inquire about admission policies actually submit applications for admission, what percent of those who submit applications for admission enroll in classes at the university? (1)Fifteen percent of those who submit applications for admission are accepted at the university. (2)Eighty percent of those who are accepted send a deposit to the university. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题If S is an infinite set of real numbers, is there a number in S that is less than every other number in S? (1)Every number in S is an integer. (2)Every number in S is positive.
单选题Acertainbasketballteamthathasplayedofitsgameshasarecordof17winsand3losses.Whatisthegreatestnumberoftheremaininggamesthattheteamcanloseandstillwinatleasofallofitsgames?(A)7(B)6(C)5(D)4(E)3
单选题How many gallons of water must be mixed with 1 gallon of a 15-percent salt solution to obtain a 10-percent salt solution?
单选题Are all of the numbers in a certain list of 15 numbers equal? (1)The sum of all of the numbers in the list is 60. (2)The sum of any 3 numbers in the list is 12。
单选题Smoking in bed has long been the main cause of home fires. Despite a significant decline in cigarette smoking in the last two decades, however, there has been no comparable decline in the number of people killed in home fires. Each one of the following statements, if true over the last two decades, helps to resolve the apparent discrepancy above EXCEPT:
单选题If a is a positive integer, and if the units" digit of a
2
is 9 and the units" digit of (a+1)
2
is 4, what is the units" digit of (a+2)
2
?
单选题There are between 100 and 110 cards in a collection of cards. If they are counted out 3 at a tie, there are 2 left over, but if they are counted out 4 at a time, there is 1 left over. How many cards are in the collection? (A) 101 (B) 103 (C) 106 (D) 107 (E) 109
单选题Ofthefollowingsums,whichisgreatest?
单选题The market value of a certain machine decreased by 30 percent of its purchase price each year. If the machine was purchased in 1982 for its market value of $8,000, what was its market value two years later?
单选题Inthefigureabove,twosearchlightsS1andS2arelocated10,000feetapart,eachcoversanareaofradius10,000feet,andeachislocated8,000feetfromtherailroadtrack.Tothenearest1,000feet,whatisthetotallengthxoftrackspannedbythesearchlights?
单选题Two children, Bob and Mary, have piggy banks into which they deposit money earned from doing odd jobs. In a certain year, both Bob and Mary each deposited $5 on the first of every month into their respective piggy banks. If these were the only deposits made into the piggy banks during the year, on December 31 does Bob have more money in his piggy bank than Mary has in her piggy bank? (Assume no withdrawals) (1)On March 15 Bob had three times as much money in his piggy bank as Mary had in hers. (2)On June 15 Bob had twice as much money in his piggy bank as Mary had in hers.
单选题DuringthefouryearsthatMrs.Lopezownedhercar,shefoundthathertotalcarexpenseswere$18,000.Fuelandmaintenancecostsaccountedforofthetotalanddepreciationaccountedforoftheremainder.Thecostofinsurancewas3timesthecostoffinancing,andtogetherthesetwocostsaccountedforofthetotal.Iftheonlyotherexpensesweretaxesandlicensefees,thenthecostoffinancingwashowmuchmoreorlessthanthecostoftaxesandlicensefees?
单选题Larry saves x dollars per month. Will Larry's total savings one year from now exceed his present savings by at least $500? (Assume that there is no interest.) (1)In 6 months Larry's total savings will be $900. (2)In 3 months Larry's total savings will exceed his present savings by $150.
单选题While driving Oil the expressway, did Robin ever exceed the 55-miles-per-hour speed limit? (1)Robin drove 100 miles on the expressway. (2)Robin drove for 2 hours on the expressway. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题Ifa3-digitintegerisselectedatrandomfromtheintegers100through199,inclusive,whatistheprobabilitythatthefirstdigitandthelastdigitoftheintegerareeachequaltoonemorethanthemiddledigit?