提问!！！急！在线等！GWD Math4 Q13

graceqiqi7312

Lists S and T consist of the same number of positive integers.  Is the median of the integers in S greater than the average (arithmetic mean) of the integers in T?
(1)    The integers in S are consecutive even integers, and the integers in T are consecutive odd integers.
(2)      The sum of the integers in S is greater than the sum of the integers in T.
    
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
答案是C
我选E，因为如果S 为2,4,6,8,10，T为1,3,5,7,9  S的中位数是6，T的平均数位12.5 两个条件都无法成立

ljhewuxia

这个题目是选C，楼主注意看题Is the median of the integers in S greater than the average (arithmetic mean) of the integers in T?
问你是不是大于，然后得的结果是no ，得出答案即为解决问题

graceqiqi7312

可是选C的意思就是两个条件一起就能得出S》T的结论啊，
我现在举的例子无法说明这个结论不就是应该选E吗

wingqin

T为1,3,5,7,9，怎么会T的平均数是12.5呢，没有数大于9.何来12.5呢？

graceqiqi7312

啊！我懂了！谢谢大家！！