If the range of the six measurements 140, 125, 180, 110, 165, and x is 80, which of the following could be the value of x?

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问题 If the range of the six measurements 140, 125, 180, 110, 165, and x is 80, which of the following could be the value of x?

选项 A、60
B、85
C、190
D、220
E、245

答案C

解析 若6个数140,125,180,110,165和x的范围是80,那么x可能是下面的哪一个数值?
解:本题的正确答案为(C)。6个数的范围实际上就是这六个数中最大数与最小数的差。题目中已知的5个数的取值范围显然小于80,所以x值可以是6个数中最大数或最小数:若x是最大数,则x=110+80=190;若x是最小数,则x=180-80=100
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