Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 210-120n+6*300*(7-2n)*(n-1) >500 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        210 - 120 * n + 6 * 300 * ( 7 - 2 * n ) * ( n - 1 ) >500         (1)

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    From inequality(1)：
         1.047069 < n < 3.419597

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    The final solution set is :
         1.047069 < n < 3.419597

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