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题目内容双击单词支持查询和收藏哦～
List A contains 11 different positive integers that are less than or equal to 20. List B contains all the integers in A except for the greatest integer. The average (arithmetic mean) of the integers in A is $$x$$ , and the average of the integers in B is $$y$$ .
Quantity A: $$x$$
Quantity B: $$y+1$$
Quantity A: $$x$$
Quantity B: $$y+1$$
D显示答案
以上解析由 考满分老师提供。
