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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 10×（1-0.8^n）/0.2 >49 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        10 × ( 1 - 0.8 ^ n ) / 0.2 >49         (1)

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    From inequality(1)：
         n ＞ 17.531419

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    The final solution set is :
         n ＞ 17.531419

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