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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
$$y+1$$
D显示答案
以上解析由 考满分老师提供。
