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  • 1. (2024七上·旺苍期中) 将下列各数填入适当的括号内:

    5, , π, , 0,

    1. (1) 正数集合:{                                                                        …}
    2. (2) 负数集合:{                                                                        …}
    3. (3) 整数集合:{                                                                      …}
    4. (4) 分数集合:{                                                                        …}

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