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标题: gwd 3-33 [打印本页]

作者: sammen 时间: 2005-2-2 21:22 标题: gwd 3-33

150, 200, 250, n

Which of the following could be the median of the 4 integers listed above?

I. 175 II. 215 III. 235

A. I only B. II only C. I and II only D. II and III only E. I, II, and III 这个题目,中位数只有可能是(150+200)/2=175和(200+250)/2=225.为什么答案给的是C,215怎么得的?

作者: mikejia 时间: 2005-2-2 22:20

n可以等于230呀

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