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In a list of 5 different numbers the average (arithmetic mean) of the 3 greatest numbers is 72 more than the average of the 3 least nunbers. The average of the 2 greatest numbers is how much more than the average of the 2 least numbers?
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· 相关考点
5.2.1 平均值
5.2.1 平均值
以上解析由 考满分老师提供。