set X has 5 numbers, and the average is greater than medium; set Y has 7 numb
ers, and the average is greater than medium.
已知(1) medium of set X is greater than medium of set Y (2)average of set X i
s greater than average of set Y
问：set Z combined x and y, is the average of Z greater than its medium?
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发表于 2007-12-30 13:23:08
