已选分类
管理学工商管理
单选题Forallrealnumbersν,theoperationν*isdefinedbytheequation.If(ν*)*=8,thenν=
单选题Whichofthefollowinginequalitiesisanalgebraicexpressionfortheshadedpartofthenumberlineabove?
单选题Bowls X and Y each contained exactly 2 jelly beans, each of which was either red or black, One of the jelly beans in bowl X was exchanged with one of the jelly beans in bowl Y. After the exchange, were both of the jelly beans in bowl X black? (1)Before the exchange, bowl X Contained 2 black jelly beans. (2)After the exchange, bowl Y contained 1 jelly bean of each color.
单选题A toy store regularly sells all stock at a discount of 20 percent to 40 percent. If an additional 25 percent were deducted from the discount price during a special sale, what would be the lowest possible price of a toy costing $16 before any discount? (A) $5.60 (B) $7.20 (C)$8.80 (D) $9.60 (E) $15.20
单选题If ⊙ denotes a mathematical operation, does x⊙y=y⊙x for all x and y? (1)For all z and y, x⊙y=2(x2+y2) (2)For all y, 0⊙y=2y2
单选题Neighboring landholders: Air pollution from the giant aluminum refinery that has been built next to our land is killing our plants.
Company spokesperson: The refinery is not to blame, since our study shows that the damage is due to insects and fungi. Which of the following, if true, most seriously weakens the conclusion drawn by the company spokesperson?
单选题All actors are exuberant people and all exuberant people are extroverts, but nevertheless it is true that some shy people are actors.
If the statements above are true, each of the following must also be true EXCEPT:
单选题Isthepositiveintegernequaltothesquareofaninteger?(1)Foreveryprimenumberp,ifpisadivisorofn,thensoisp2.(2)isaninteger(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Harrystarteda6-milehikewithafull10-cupcanteenofwaterandfinishedthehikein2hourswith1cupofwaterremaininginthecanteen.Ifthecanteenleakedattherateof1cupperhourandHarrydrank3cupsofwaterduringthelastmile,howmanycupsdidhedrinkpermilduringthefirst5milesofthehike?
单选题A merchant paid $300 for a shipment of x identical calculators. The merchant used 2 of the calculators as demonstrators and sold each of the others for $5 more than the average (arithmetic mean) cost of the X calculators. If the total revenue from the sale of the calculators was $120 more than the cost of the shipment, how many calculators were in the shipment?
单选题Inthefigureabove,lineACrepresentsaseesawthatistouchinglevelgroundatpointA.IfBisthemidpointofAC,howfarabovethegroundispointC?(1)x=30(2)PointBis5feetabovetheground.
单选题Psychological research indicates that college hockey and football players are more quickly moved to hostility and aggression than are college athletes in noncontact sports such as swimming. But the researchers" conclusion—that contact sports encourage and teach participants to be hostile and aggressive—is untenable. The football and hockey players were probably more hostile and aggressive to start with than the simmers.
Which of the following, if true, would most strengthen the conclusion drawn by the psychological researchers?
单选题If x, y, and z are single-digit integers and 100(x)+1,000(y)+10(z)=N, what is the units' digit of the number N?
单选题What is the least possible product of 4 different integers, each of which has a value between -5 and 10, inclusive?
单选题Ifmoneyisinvestedatrpercentinterest,compoundedannually,theamountoftheinvestmentwilldoubleinapproximatelyyears．IfPat'sparentsinvested$5,000inalong-termandthatpays8percentinterest,compoundedannually,whatwillbetheapproximatetotalamountoftheinvestment18yearslater,whenPatisreadyforcollege?(A)$20,000(B)$15,000(C)$12,000(D)$10,000(E)$9,000
单选题No one can be licensed as an electrician in Parker County without first completing a certain course in electrical safety procedures. All students majoring in computer technology at Parker County Technical College must complete that course before graduating. Therefore, any of the college"s graduates in computer technology can be licensed as an electrician in Parker County.
The answer to which of the following would be most helpful in evaluating the argument?
单选题At a certain state university last term, there were p students each of whom paid either the full tuition of x dollars or half the full tuition. What percent of the tuition paid by the p students last term was tuition from students who paid the full tuition? (1)Of the P students, 20 percent paid the full tuition. (2)The p students paid a total of $91.2 million for tuition last term. (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 1＜d＜2, is the tenths' digit of the decimal representation of d equal to 9? (1)d+0.01＜2 (2)d+0.05＞2 (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 n is a positive integer, is the value of b-a at least twice the value of 3n-2n? (1)a=2n+1 and b=3n+1 (2)n=3
单选题A necklace is made by stringing N individual beads together in the repeating pattern red bead, green bead, white bead, blue bead, and yellow bead. If the necklace design begins with a red bead and ends with a white bead, then N could equal (A) 16 (B) 32 (C) 41 (D) 54 (E) 68