Overview: 7 questions will be solved this time.Among them
           ☆7 inequalities

[ 1/7Inequality]
    Assignment:Find the solution set of inequality 50N11+30N21+20N31 >= 100 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        50 * N * 11 + 30 * N * 21 + 20 * N * 31 >= 100         (1)

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    From inequality(1)：
         N ≥ 1/18

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    The final solution set is :
         N ≥ 1/18
[ 2/7Inequality]
    Assignment:Find the solution set of inequality 50N12+30N22+20N32 >= 200 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        50 * N * 12 + 30 * N * 22 + 20 * N * 32 >= 200         (1)

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    From inequality(1)：
         N ≥ 0.105263

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    The final solution set is :
         N ≥ 0.105263
[ 3/7Inequality]
    Assignment:Find the solution set of inequality 50N13+30N23+20N33 >= 90 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        50 * N * 13 + 30 * N * 23 + 20 * N * 33 >= 90         (1)

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    From inequality(1)：
         N ≥ 9/200

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    The final solution set is :
         N ≥ 9/200
[ 4/7Inequality]
    Assignment:Find the solution set of inequality 50N14+30N24+20N34 >= 120 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        50 * N * 14 + 30 * N * 24 + 20 * N * 34 >= 120         (1)

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    From inequality(1)：
         N ≥ 0.057143

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    The final solution set is :
         N ≥ 0.057143
[ 5/7Inequality]
    Assignment:Find the solution set of inequality N11+N12+N13+N14 <= 5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         N * 11 + N * 12 + N * 13 + N * 14 <= 5         (1)

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    From inequality(1)：
         N ≤ 1/10

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    The final solution set is :
         N ≤ 1/10
[ 6/7Inequality]
    Assignment:Find the solution set of inequality N21+N22+N23+N24 <= 8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         N * 21 + N * 22 + N * 23 + N * 24 <= 8         (1)

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    From inequality(1)：
         N ≤ 4/45

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    The final solution set is :
         N ≤ 4/45
[ 7/7Inequality]
    Assignment:Find the solution set of inequality N31+N32+N33+N34 <= 10 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         N * 31 + N * 32 + N * 33 + N * 34 <= 10         (1)

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    From inequality(1)：
         N ≤ 0.076923

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    The final solution set is :
         N ≤ 0.076923

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>>注：本次最多计算 7 道题。

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