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GMAT数学精华题型解析(4)

发布时间:2016-03-02  编辑:查字典英语网小编

  GMAT数学考试常见题型的解题技巧有哪些呢?以下将为大家深入分析GMAT数学考试常见题型的解题策略和技巧,希望能够为考生备战GMAT数学考试带来帮助。

  106. 11122-!-item-!-187;#058007588

  If a certain sample of data has a mean of 20.0 and a standard deviation of 3.0, which of the following values is more than 2.5 standard deviations from the mean?

   12.0

   13.5

   17.0

   23.5

   26.5

  【答案】 A

  几倍的标准差,就用平均值加减几倍的标准差,即为新的值域

  110. 11364-!-item-!-187;#058007646

  The residents of Town X participated in a survey to determine the number of hours per week each resident spent watching television. The distribution of the results of the survey had a mean of 21 hours and a standard deviation of 6 hours. The number of hours that Pat, a resident of Town X, watched television last week was between 1 and 2 standard deviations below the mean. Which of the following could be the number of hours that Pat watched television last week?

   30

   20

   18

   12

   6

  --------------------------------------------------------------------------------------------------------------------------------

  【答案】 D

  82. 7356-!-item-!-187;#058005489

  Is

   x2 y2 可用坐标抛物线看出

   x y

  --------------------------------------------------------------------------------------------------------------------------------------------------------

  【答案】A

   x2 y2 平方已將正負數的影響拿掉 選項成立

   x y 的情況下,y有可能為負數。如此一來y的絕對值不一定小於x。 選項不成立

  99. 9270-!-item-!-187;#058006322

  If m 0 and n 0, is? 相减

   m n

   x 0

  【答案】C

  100. 9327-!-item-!-187;#058006480

  In the rectangular coordinate system shown above, does the line k intersect quadrant II ?

   The slope of k is - 注意:答案是否定的,但只要确定,也是对的

   The y-intercept of k is -6.

  【答案】A

  110. 10493-!-item-!-187;#058007240

  If z^n = 1, what is the value of z ?

   n is a nonzero integer.

   z 0

  【答案】C

  113. 11760-!-item-!-187;#058007855

  For a certain set of n numbers, where n 1, is the average equal to the median?

   If the n numbers in the set are listed in increasing order, then the difference between any pair of successive numbers in the set is 2.

   The range of the n numbers in the set is 2.

  【答案】A

  以上为大家推荐了一些GMAT数学试题的使用解题技巧,考生不妨从中借鉴,通过针对性的练习来逐步掌握GMAT数学考试的解题技巧,从而在GMAT考试中发挥出更好的水平。

  

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