已选分类
管理学
单选题Is the positive integer x an even number? (1)If z is divided by 3, the remainder is 2. (2)If x is divided by 5, the remainder is 2.
单选题In 1985 a company sold a brand of shoes to retailers for a fixed price per pair. In 1986 the number of pairs of the shoes that the company sold to retailers decreased by 20 percent, while the price per pair increased by 20 percent. If the company's revenue from the sale of the shoes in 1986 was $3.0 million, what was the approximate revenue from the sale of the shoes in 1985? (A) $2.4 million (B) $2.9 million (C) $3.0 million (D) $3.1 million (E) $3.6 million
单选题At what speed was a train traveling on a trip when it had completed half of the total distance of the trip? (1)The trip was 460 miles long and took 4 hours to complete. (2)The train traveled at an average rate of 115 miles per hour Oil the trip.
单选题An experiment was done in which human subjects recognize a pattern within a matrix of abstract designs and then select another design that completes that pattern. The results of the experiment were surprising. The lowest expenditure of energy in neurons in the brain was found in those subjects who performed most successfully in the experiments.
Which of the following hypotheses best accounts for the findings of the experiment?
单选题Ifaandbarepositiveintegers,whatisthevalueofa+b?(2)Thegreatestcommondivisorofaandbis1.
单选题Found in caves with the bones of australopithecines, which are thought by some to be ancient ancestors of the human species, were great collections of animal bones. From the frequencies of types of bones, it can be seen that many bones represented only parts of animals that must have died elsewhere. The australopithecines thus must have been mighty hunters, to have brought home so much meat.
Which of the following, if true, most seriously weakens the conclusion drawn above?
单选题In a recent study, sedentary middle-aged men who drink more than two cups of coffee a day were found more likely than other sedentary middle-aged men to have a high blood level of cholesterol, which is a factor increasing risk of heart disease. Cholesterol can reach the blood from food and drink but is not contained in coffee.
Which of the following, if true, most seriously weakens a conclusion from the study that for sedentary middle-aged men coffee increases the risk of heart attack?
单选题When the integer k is divided by 12, the remainder is 3. Which of the following, when divided by 12, will have a remainder of 6? Ⅰ 2k Ⅱ 6k Ⅲ 4k+6 (A) Ⅰonly (B) Ⅱonly (C) Ⅲonly (D) ⅠandⅡonly (E) Ⅰ, Ⅱ, andⅢ
单选题NET INCOME FOR CORPORATIONS A and B Corporation A Corporation B Net Income in 1987 $2.9 million $0.87 million Percent Decrease in Net Income from 1986 to 1987 8.8% 13.3% The net income of Corporation B in 1986 was approximately what percent of the net income of Corporation A in 1987?
单选题Theadditionproblemaboveshowsfourofthe24differentintegersthatcanbeformedbyusingeachofthedigits1,2,3and4exactlyonceineachinteger.Whatisthesumofthese24integers?
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? (A) 19 (B) 38 (C) 41 (D) 44 (E) 46
单选题If x and y are integers, is xy+1 divisible by 3? (1)When x is divided by 3, the remainder is 1. (2)When y is divided by 9, the remainder is 8. (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What is the least positive integer that is divisible by each of the integers 1 through 7, inclusive?
单选题In 1985 a company sold a brand of shoes to retailers for a fixed price per pair. In 1986 the number of pairs of the shoes that the company sold to retailers decreased by 20 percent, while the price per pair increased by 20 percent. If the company's revenue from the sale of the shoes in 1986 was $3.0 million, what was the approximate revenue from the sale of the shoes in 1985?
单选题
单选题What is the probability that events A and B both occur? (1)The probability that event A occurs is 0.8. (2)The probability that event B occurs is 0.6. (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Town T has 20,000 residents, 60 percent of whom are female. What percent of the residents were born in Town T? (1)The number of female residents who were born in Town T is twice the number of male residents who were not born in Town T. (2)The number of female residents who were not born in Town T is twice the number of male residents who were born in Town T. (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A total of 40 brand X television sets and 80 brand Y television sets were purchased for a motel chain. If the price of each brand Y set was twice the price of each brand X set, what percent of the total bill was the price of a brand Y set? (A) 0.25% (B) 0.5% (C) 0.625% (D) 0.833% (E) 1.0%
单选题Salesperson A's compensation for any week is $360 plus 6 percent of the portion of A's total sales above $1,000 for that week. Salesperson B's compensation for any week is 8 percent of B's total sales for that week. For what amount of total weekly sales would both salespeople earn the same compensation?
单选题3.2□△6 If □ and △ each represent single digits in the decimal above, what digit does □ represent? (1)When the decimal is rounded to the nearest tenth, 3.2 is the result. (2)When the decimal is rounded to the nearest hundredth, 3.24 is the result. (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．