Math question: How many obtuse triangles (having an angle greater than 90 degrees) are there out of all possible triangles with side lengths less than or equal to 20?
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Question: Find the absolute extrema of the function f(x) = x^3 - 3x^2 + 2x on the interval [-2, 3].
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Math question: "What is the result of dividing 2/3 by 4/5?"