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题库总题数: 9689
做题总人数: 137806
平均每天做题人数: 2370
  • 破解版07 PREP模考软件破解版真题,题目难度较为接近考试难度,不具备自适应性。在考前做PREP模考练习,能帮助你体验考试状态,提前适应考试,更好的练习做题节奏。

    1423
    题目总数

    36820
    做题总人数

    72.5%
    平均准确率

    • 【问题求解PS】-14480 -破解版07

      A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?

      来源: 2395人已做 700难度 55.3%正确率

    • 【问题求解PS】-14451 -破解版07

      The 15 homes in a new development are each to be sold for one of three different prices so that the developer receives an average (arithmetic mean) of $200,000 per home. If 4 of the homes are to be sold for $170,000 each and 5 are to be sold for $200,000 each, what will be the selling price of each of the remaining 6 homes?

      来源: 635人已做 600难度 94.3%正确率

    • 【问题求解PS】-14380 -破解版07

      来源:破解版07 350人已做 600难度 91.4%正确率

    • 【问题求解PS】-14379 -破解版07

      A certain class, consisting of a lecture and a question-and-answer session, lasted from 2:45 to 4:30 one afternoon. If the lecture lasted from 2:45 to 4:15, then the question-and-answer session was what fraction of the total class time?

      来源: 806人已做 600难度 90%正确率

    • 【问题求解PS】-14378 -破解版07

      The table shows the number of residents in a certain development who are willing to contribute to build a swimming pool, provided the required contribution does not exceed the amount indicated by the resident. The following three amounts are being considered as the required contribution. Which would ensure that more than half of the residents contribute to build the pool?Ⅰ.$33 Ⅱ.$48Ⅲ.$55

      来源: 809人已做 680难度 66.4%正确率

    • 【问题求解PS】-14377 -破解版07

      If S=[n(n+1)] /2 and n = 40, then S =

      来源: 601人已做 600难度 92.5%正确率

    • 【问题求解PS】-14376 -破解版07

      In a survey of 248 people, 156 are married, 70 are self-employed, and 25 percent of those who are married are self-employed. If a person is to be randomly selected from those surveyed, what is the probability that the person selected will be self-employed but not married?

      来源: 480人已做 650难度 76.3%正确率

    • 【问题求解PS】-14375 -破解版07

      A circular cloth with a diameter of 20 inches is placed on a circular tray with a diameter of 24 inches. What fraction of the tray's surface is not covered by the cloth?

      来源: 529人已做 600难度 89%正确率

    • 【问题求解PS】-14374 -破解版07

      If x and y are positive, which of the following must be greater than 1/√(x+y) ?

      来源: 1235人已做 680难度 75.6%正确率

    • 【问题求解PS】-14373 -破解版07

      Square S is inscribed in circle T. If the perimeter of S is 24, what is the circumference of T ?

      来源: 567人已做 600难度 85.9%正确率

热门讨论
  • 【问题求解PS】

    If the area of the triangle above is 35,what is the value of k?*此题无图,可跳过

  • 【问题求解PS】

    If a and b are positive integers such that a – b and a/b are both even integers, which of the following must be an odd integer? 

  • 【句子改错SC】

    Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system’s ability to deal with all other pollutants. 

  • 【句子改错SC】

    More than 300 rivers drain into Siberia's Lake Baikal, which holds 20 percent of the world's fresh water, more than all the North American Great Lakes combined.

  • 【句子改错SC】

    So dogged were Frances Perkins’ investigations of the garment industry, and her lobbying for wage and hour reform was persistent, Alfred E. Smith and Franklin D. Roosevelt recruited Perkins to work within the government, rather than as a social worker. 

  • 【数据充分DS】

    Each of the students in a certain class received a single grade of P, F, or I. What percent of the students in the class were females? (1) Of those who received a P, 40 percent were females. (2) Of those who received either an F or I, 80 percent were males. 

  • 【数据充分DS】

    Given a positive number N, when N is rounded by a certain method (for convenience, call it Method Y), the result is if and only if n is an integer and  .In a certain gas sample, there are, when rounded by Method Y,  molecules of H2 and also  molecules of O2. When rounded by Method Y. what is the combined number of H2 and O2 molecules in the gas sample?(1) The number of H2 molecules and the number of O2 molecules are each less than (2) The number of H2 molecules is more than twice the number of O2 molecules 

  • 【数据充分DS】

     If x is a positive integer, how many positive integers less than x are divisors of x?(1)x2  is divisible by exactly 4 positive integers less than x2 (2)2x is divisible by exactly 3 positive integers less than 2x.

  • 【句子改错SC】

    Officials at the United States Mint believe that the Sacagawea dollar coin will be used more as a substitute for four quarters rather than for the dollar bill because its weight, only 8.1 grams, is far less than four quarters, which weigh 5.67 grams each. 

  • 【阅读RC】

    According to the passage, which of the following is probably true of the storage spaces mentioned in highlight ? 

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