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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality C(1,x)*0.3*(0.7)^(x-1) >95% .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         C( 1 , x ) * 0.3 * ( 0.7 ) ^ ( x - 1 ) >95 %         (1)

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    From inequality(1)：
         x < -2.231737

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    The final solution set is :
         x < -2.231737

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