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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1-(1-1/210)^n <1/10 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 - ( 1 - 1 / 210 ) ^ n <1 / 10         (1)

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    From inequality(1)：
         n < √973459/√1998

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    The final solution set is :
         n < √973459/√1998

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