2. 职称英语
  3. There are 24 positive integers in a sequence, the first 12 integers are less tha

There are 24 positive integers in a sequence, the first 12 integers are less tha

游客2024-01-12  35
问题 There are 24 positive integers in a sequence, the first 12 integers are less than 50 and the second 12 integers are greater than 50.
Quantity A: the median of the sequence
Quantity B: 50
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案 D
解析 24个数的median显然是经过排序后的第12个数和第13个数的平均值；现在有12个数小于50，有12个数大于50；那么排序后第12个数必然小于50，第13个数必然大于50，但是由于不知道它们的具体数值，因此这两个数的平均值与50无法比较，所以选项D为正确答案。
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