已选分类
管理学
单选题What is the units digit of (13)4(17)2(29)3? (A) 9 (B) 7 (C) 5 (D) 3 (E) 1
单选题The pages of a report are numbered consecutively from 1 to 10. If the sum of the page numbers up to and including page number z of the report is equal to one more than the sum of the page numbers following page number x, then x=
单选题A merchant sells an item at a 20 percent discount, but still makes a gross profit of 20 percent of the cost. What percent of the cost would the gross profit on the item have been if it had been sold without the discount?
单选题Themarkuponatelevisionsetis20percentofthecost.Themarkupiswhatpercentofthesellingprice?(markup=sellingprice-cost)
单选题All of the following have the same number of distinct prime factors EXCEPT
单选题In a retail store, the average (arithmetic mean) sale for month M was d dollars. Was the average (arithmetic mean) sale for month J at least 20 percent higher than that for month M? (1)For month M, total revenue from sales was $3,500. (2)For month J, total revenue from sales was $6, 000. (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Although parapsychology is often considered a pseudoscience, it is in fact a genuine scientific enterprise, for it uses scientific methods such as controlled experiments and statistical tests of clearly stated hypotheses to examine the questions it raises.
The conclusion above is properly drawn if which of the following is assumed?
单选题How many integers n are there such that r＜n＜s? (1)s-r=5 (2)r and s are not integers.
单选题If p and q are positive integers, what is the value of q? (1)qp-1=1 (2)p=1
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.
单选题A new law gives ownership of patents—documents providing exclusive right to make and sell an invention—to universities, not the government, when those patents result from government-sponsored university research. Administrators at Logos University plan to sell any patents they acquire to corporations in order to fund programs to improve undergraduate teaching.
Which of the following, if true, would cast most doubt on the viability of the college administrators" plan described above?
单选题Point(x,y)hasinwhichquadrantoftherectangularcoordinatesystemshownabove?(1)x+y＜0(2)x=1andy=-7
单选题A researcher studying drug addicts found that, on average, they tend to manipulate other people a great deal more than no addicts do. The researcher concluded that people who frequently manipulate other people are likely to become addicts.
Which of the following, if true, most seriously weakens the researcher"s conclusion?
单选题Being an only child has little to do with a child"s social development. A recent study that followed thirty only children and thirty-five first-born children to the age of three found that the two groups of children behaved very similarly to each other toward their peers, their parents, and other adults.
Which of the following, if true, most weakens the conclusion drawn above?
单选题A computer is programmed to generate a list of multiples of prime numbers 2,3 and 5, as shown below: Program 1—List multiples of 2 Program 2—List multiples of 3 Program 3—List multiples of 5 How many integers less than 100 will appear on all of the lists of programs produced above?
单选题The participants in a race consisted of 3 teams with 3 runners on each team. A team was awarded 6-n points if one of its runners finished in nth place, where 1≤n≤5. If all of the runners finshed the race and if there were no ties, was each team awarded at least one point? (1)No team was awarded more than a total of 6 points. (2)No pair of teammates finished in consecutive places among the top five places. (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In a certain group of people, the average (arithmetic mean) weight of the males is 180 pounds and of the females, 120 pounds. What is the average weight of the people in the group? (1)The group contains twice as many females as males. (2)The group contains 10 more females than males.
单选题For the positive numbers, n, n+1, n+2, n+4 and n+8, the mean is how much greater than the median? (A) 0 (B) 1 (C) n+1 (D) n+2 (E) n+3
单选题Which of the following CANNOT be zero? Ⅰ. The sum of 7 consecutive integers Ⅱ. The sum of 10 consecutive even integers Ⅲ. The product of 13 consecutive integers
单选题The most widely used therapy for a certain type of ulcer completely heals such ulcers in 44 percent of patients within six months. In a six-month trial of a new therapy for this type of ulcer, 80 percent of ulcers treated achieved significant healing and 61 percent were completely healed. Since the trial treated only ulcers of this type that were worse than average, the new therapy clearly promotes healing more effectively than the most widely used therapy.
The answer to which of the following would be most useful in evaluating the argument given?