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The best math program for middle school students
Monday, December 15, 2014
2013 AMC 10 A and B : Solutions to the Harder Problems
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From AoPS videos : 2013 AMC 10 A #21 - This is also #17 on the AMC 12 A. 2013 AMC 10 A #22 - This is also #18 on the AMC 12 A. 2013 A...
Sunday, December 7, 2014
Problem Solving Strategies: Applications of the “Choose 2” method
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1. Example: How many diagonals can be drawn for a polygon with “n” sides? Method I: The number of diagonals in a polygon = n(n-3)/2, wher...
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