21st Canadian Mathematical Olympiad Problems 1989
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21St Canadian Mathematical Olympiad Problems 19891. How many permutations of 1, 2, 3, ... , n have each number larger than all the preceding numbers or smaller than all the preceding numbers? 2. Each vertex of a right angle triangle of area 1 is reflected in the opposite side. What is the area of the triangle formed by the three reflected points?
Tuesday, September 14, 2010
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