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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0 <180*(n-2)-1680 <180 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        0 <180 * ( n - 2 ) - 1680         (1)
        180 * ( n - 2 ) - 1680 <180         (2)

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    From inequality(1)：
         n ＞ 34/3
    From inequality(2)：
         n < 37/3

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    From inequalities (1) and (2)
         34/3 < n < 37/3     (3)

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    The final solution set is :
         34/3 < n < 37/3

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