Mean is calculated by adding up all the values in a sample, then dividing by the total number of values. Calculate the mean of the sample: 10, 20, 30, 40, and 50.
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What is the result of 25 divided by 5, multiplied by 8, plus 3, minus 10?
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Math question: What is the maximum value of the function f(x) = 2x^2 - 5x + 3 in the interval [0, 5]?