2. 外语
  3. List K consists of the numbers -10, -5, 0, 5, and 10. Which of the following lists of numbers have the same range as the numbers

List K consists of the numbers -10, -5, 0, 5, and 10. Which of the following lists of numbers have the same range as the numbers

admin2014-08-13  81
问题 List K consists of the numbers -10, -5, 0, 5, and 10. Which of the following lists of numbers have the same range as the numbers in list K ?
Indicate all such lists.
选项 A、-15, -1,0, 1, 15
B、-7, -4, -2, 1, 13
C、0, 1, 2, 5, 8, 10
D、2, 3, 5, 15, 19, 22
E、4, 5, 6, 24
答案B，D，E
解析 Recall that the range of a list of numbers is defined as the difference between the greatest number and the least number in the list. The greatest number in list K is 10 and the least number is -10. Therefore, the range of the numbers in list K is 10 -(-10)= 10 + 10 = 20. So, to answer the question, you need to consider each list of numbers given in the choices and determine whether that list of numbers has a range of 20.
    Note that in each of the choices, the numbers are listed in order from least to greatest. Therefore, you need to look only at the first number and last number in each list to determine which lists have a range of 20. The ranges can be calculated quickly as follows.
Choice A: The greatest number is 15 and the least number is -15; therefore, the range is 15 -(-15)= 15 + 15 = 30.
Choice B: The greatest number is 13 and the least number is -7; therefore, the range is 13 -(-7)= 13 + 7 = 20.
Choice C: The greatest number is 10 and the least number is 0; therefore, the range is 10 - 0 = 10.
Choice D: The greatest number is 22 and the least number is 2; therefore, the range is 22 - 2 = 20.
Choice E: The greatest number is 24 and the least number is 4; therefore, the range is 24 - 4 = 20.
In each of Choices B, D, and E, the range is 20. The correct answer consists of Choices B, D, and E.
转载请注明原文地址:https://kaotiyun.com/show/k5kO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)