What is the average score of a class comprising 30 students, if the highest score is 100, the lowest score is 65, and the rest of the scores are evenly distributed between them?
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What is the result of adding 1234 to the product of 567 and subtracting 890 multiplied by 2?
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What is the derivative of the function f(x) = 3sin(2x) - 4cos(3x) + tan(x) at x = π/4?