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Mathematics, 30.10.2021 14:00 moomoofower

Cho A là tập các số nguyên chắn, B là tập các số nguyên lẽ. Tập nào trong hai tập trên ổn định đối với phép toán
a) Phép cộng các số nguyên
b) Phép nhân các số nguyên

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Cho A là tập các số nguyên chắn, B là tập các số nguyên lẽ. Tập nào trong hai tập trên ổn định đối...

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