What is the mean, mode, median, range, and average of the data set: 10, 15, 20, 25, 30?
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Math question: What is the smallest positive integer solution (excluding 0) for the equation x^n + y^n = z^n, where n > 2, according to Fermat’s Theorem?
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What is the value of the cosine function at an angle of 45 degrees on the unit circle?