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I searched the problem on AoPS, and found this thread from 2016. The solution by Zimbalono there (post #13) is worth looking at as well. ... <看更多>
Need 94.5 or more on the 2012 AMC 12 A to qualify for 2012 AIME. ... AoPS Academy brings Art of Problem Solving's curriculum and pedagogical techniques to ... ... <看更多>