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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ((1-n/50000)/n)*206 <= (9.5*0.1/1.96)^2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( ( 1 - n / 50000 ) / n ) * 206 <= ( 9.5 * 0.1 / 1.96 ) ^ 2         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         n ≤ 0
    From inequality(2)：
         n < 0 或  n ＞ 0

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    From inequalities (1) and (2)
         n < 0    (3)

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    The final solution set is :
         n < 0

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