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题库 / Prep2007E2-DS-19
Set S consists of five consecutive integers, and set T consists of seven consecutive integers. Is the median of the numbers in set S equal to the median of the numbers in set T ?
(1) The median of the numbers in set S is 0.
(2) The sum of the numbers in set S is equal to the sum of the numbers in set T.
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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麻烦问下 因为两个集合中都是连续的整数 而且是奇数个 所以 平均数=中位数呀
条件2 说sum相等 setS平均数=sum/5 setT平均数=sum/7 那中位数肯定不equal啊
所以充分啊 哪里不充分？
如果中位数是0就equal了
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