标题: Answer for a median/range question [打印本页] 作者: pgclt 时间: 2002-10-4 21:06 标题: Answer for a median/range question
7 numbers, median is 10, range is 70. the median of three largest numbers is 30. what's possible value of the RANGE of three smallest numbers.
I. 0; II. 30; III.50.
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Answer: I, II, III.
My answer is I and II. can someone confirm. thanks!作者: tongxun 时间: 2002-10-5 00:48
the median of three largest numbers is 30.则最大的数应该大于等于30。
设数字的大小排列为：A、B、C、D、E、F、G。
G-A=70，G=70+A;
G>=30, 70+A>=30,A>=-40.
because the median is 10, and the smallest number may be -40.
so the range may be 10-(-40)=50作者: pgclt 时间: 2002-10-5 00:56
Got it. I started thinking about different numbers. I am clear now. Thanks for the reply!作者: tongxun 时间: 2002-10-5 01:00
pgclt你对我的帮助这么大，还用说谢谢吗？
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