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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1-(1-1/27000)^(120*x) >= 99.9% .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 - ( 1 - 1 / 27000 ) ^ ( 120 * x ) >= 99.9 %         (1)

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    From inequality(1)：
         x ≥ 1554.216155

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    The final solution set is :
         x ≥ 1554.216155

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