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The median of 21 different integers is 17. Which of the following is the least p
The median of 21 different integers is 17. Which of the following is the least p
游客
2024-01-12
67
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问题
The median of 21 different integers is 17. Which of the following is the least possible of the range of these integers?
选项
A、17
B、18
C、19
D、20
E、21
答案
D
解析
这21个不同整数的median是17，由于序列个数是奇数，因此17必然是中间那个数；要使这些整数的range最小，那么这些数必须是连续的整数。所以最大数为17+10=27，最小数为17-10=7。range=最大值-最小值=27-7=20，所以D为正确答案。
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