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题库 / Prep2007E2-DS-97
What is the median of a certain set of 7 numbers?
(1) 3 of the numbers are less than 10.
(2) 4 of the numbers are greater than 10.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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问的是 WHAT ~！啊！
【中位数】中位数的定义，奇数个数组中，中位数是排在中间那个位置的数；偶数个数组中，是中间两个数的平均数；
7位数的中位数就是4位：
1-跟第三位无关，不充分
2-不能知道具体是几，不充分
选E