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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 16.425-0.175n-0.2n(n-1) ≤(n-1)0.4+0.175 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        16.425 - 0.175 * n - 0.2 * n * ( n - 1 ) ≤ ( n - 1 ) * 0.4 + 0.175         (1)

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    From inequality(1)：
         n ≤ -10.109681 或  n ≥ 8.234681

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    The final solution set is :
         n ≤ -10.109681 或  n ≥ 8.234681

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