12个大小相同的球,其中一个重量和其他11个不一样,用一个天平3秤找出那个球!必须3秤,并且要确定它是比其他11个球重还是轻?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 11:59:03
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