已选分类
管理学
单选题OnacertaindayittookBillthreetimesaslongtodrivefromhometoworkasittookSuetodrivefromhometowork.HowmanyKilometersdidBilldrivefromhometowork?(1)Suedrove10kilometersfromhometowork,andtheratioofwasthesameforBillandSuethatday.(2)TheratioofforSuethatdaywas64kilometersperhour.
单选题What is the 1st term in sequence S? (1)The 3 rd term in S is 2. (2)The 2 nd term in S is twice the 1 st, and the 3 rd term is three times the 2 nd.
单选题How many integers between 324,700 and 458,600 have tens digit 1 and units digit 3?
单选题The average (arithmetic mean) of 3 different positive integers is 100 and the largest of these 3 integers is 120, what is the least possible value of the smallest of these 3 integers? (A) 1 (B) 10 (C) 61 (D) 71 (E) 80
单选题An instructor scored a student's test of 50 questions by subtracting 2 times the number of incorrect answers from the number of correct answers. If the student answered all of the questions and received a score of 38, how many questions did that student answer correctly?
单选题For any positive integer n, n＞1, the "length" of n is the number of positive primes (not necessarily distinct) whose product is n. For example, the length of 50 is 3 since 50=(2)(5)(5) Which of the following integers has length 3? (A) 3 (B) 15 (C) 60 (D) 64 (E) 105
单选题In a student body the ratio of men to women was 1 to 4. After 140 additional men were admitted, the ratio of men to women became 2 to 3. How large was the student body after the additional men were admitted? (A) 700 (B) 560 (C) 280 (D) 252 (E) 224
单选题A random sample of shoppers responded to the questions contained in a marketing survey. Six months later, another random sample of shoppers responded to exactly the same questions, except that the questions were now arranged in a different order. The pattern of responses to many individual questions was greatly different, thus demonstrating that a question will sometimes elicit different responses depending only on what question precedes it.
The argument above depends on which of the following assumptions?
单选题What is the smallest integer k for which 64
k
＞4
14
?
单选题Bracken, a poisonous weed, is spreading and damaging much pastureland in the Northern Hemisphere. One potentially inexpensive and self-sustaining countermeasure is to introduce natural enemies of the plant; therefore, some scientists have proposed to control bracken by a release of brackeneating moths native to the Southern Hemisphere into brackeninfested areas in the Northern Hemisphere.
If the scientists" proposal for controlling bracken is adopted, which of the following is a necessary condition for its success?
单选题If77,777=70,707+(7.07×n),thenn(A)1,000(B)100(C)10(D)(E)
单选题If k and ω are the dimensions of a rectangle that has area 42, and if k and ω are integers such that k＞ω, what is the total number of possible values of k?
单选题Residents of an apartment complex are considering two possible plans for collecting recyclable trash.
Plan 1 - Residents will deposit recyclable trash in municipal dumpsters located in the parking lot. The trash will be collected on the first and the fifteenth days of each month.
Plan 2 - Residents will be given individual containers for recyclable trash. The containers will be placed at the curb twice a week for trash collection.
Which of the following points raised at a meeting of the residents, if valid, would most favor one of the recycling plans over the other?
单选题Last year Luis invested x dollars for one year, half at 8 percent simple annual interest and the other half at 12 percent simple annual interest. Now he wants to reinvest the x dollars for one year in the same two types of investments, but the lower rate has decreased, If the higher rate is unchanged, what fraction of the x dollars must be reinvest at the 12 percent rate s that the total interest earned from the x dollars will be the same for both years? (1)The lower rate is now 6 percent. (2)The total amount of interest earned from the two investments last year was $3,000.
单选题If y is an odd integer, which of the following must be an even integer?
单选题Adecoratorboughtaboltofdefectivecloththathejudgedtobeusable,inwhicheasethecostwouldbe$0.80perusableyard.Ifitwaslaterfoundthatonlyoftheboltcouldbeused,whatwastheactualcostperusableyard?
单选题Shanna: Owners of any work of art, simply by virtue of ownership, ethically have the right to destroy that artwork if they find it morally or aesthetically distasteful, or if caring for it becomes inconvenient.
Jorge: Ownership of unique artworks, unlike ownership of other kinds of objects carries the moral right to possess but not to destroy. A unique work of art with aesthetic or historical value belongs to posterity and so must be preserved, whatever the personal wishes of its legal owner.
On the basis of their statements, Shanna and Jorge are committed to disagreeing about the truth of which one of the following statements?
单选题If n is an integer between 2 and 100 and if n is also the square of an integer, what is the value of n?
(1)n is the cube of an integer.
(2)n is even.
单选题Low-income families are often unable to afford as much child care as they need. One government program would award low-income families a refund on the income taxes they pay of as much as $1,000 for each child under age four. This program would make it possible for all low-income families with children under age four to obtain more child care than they otherwise would have been able to afford.
Which of the following, if true, most seriously calls into question the claim that the program would make it possible for all low-income families to obtain more child care?
单选题What is the value of x2-y2? (1)x+y=2x (2)x+y=0