2. 外语
  3. If the sum of five consecutive odd integers is 5, which of the following could be true? Ⅰ. The average (arithmetic mean) of the

If the sum of five consecutive odd integers is 5, which of the following could be true? Ⅰ. The average (arithmetic mean) of the

admin2011-01-18  67
问题 If the sum of five consecutive odd integers is 5, which of the following could be true? Ⅰ. The average (arithmetic mean) of the list is equal to 5. Ⅱ. The median of the list is equal to 5. Ⅲ. The range of the list is equal to 5.
选项 A、None
B、Ⅰ only
C、Ⅱ only
D、Ⅰ and Ⅱ
E、Ⅰ and Ⅲ
答案A
解析 Let’s start by finding a list of consecutive odd integers that add up to 5. -3, -1, 1, 3, and 5 is one such list. In fact, can you think of another? There isn’t one, so now we just have to see which of the Roman numerals is true in this case. Ⅰ isn’t true--the mean is 1. Ⅱ is also untrue--the median is also 1. And the range is 8, so none of the Roman numerals are possible, and A is our answer.
转载请注明原文地址:https://jikaoti.com/ti/qnzYFFFM
本试题收录于： GMAT QUANTITATIVE题库GMAT分类
0

GMAT QUANTITATIVE

GMAT

相关试题推荐
随机试题
最新回复(0)