Math question: How many positive integer solutions are there to the equation x^n + y^n = z^n, where x, y, z are integers, n > 2, and all values are less than or equal to 100?
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Math question: What is the period of the function f(x) = cos(x)?
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In triangle ABC, if AB = 5cm, BC = 7cm, and AC = 8cm, is triangle ABC congruent to triangle XYZ with XY = 8cm, YZ = 5cm, and XZ = 7cm?