1995 British Mathematics Olympiad problem
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(n-1)!+1 = n^2
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Find (x+y+z) [Harvard-MIT] Guts contest
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x^y = y^(x-y)
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Solving the hardest question of a British Mathematical Olympiad
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Inequalities are back in the INTERNATIONAL MATH OLYMPIAD
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a * b = ab + a + b
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The Man Who Solved the World’s Most Famous Math Problem
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