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simnhi2001
2 năm trước
trong các tập hợp sau đây tập hợp nào là tập hợp con của tập hợp còn lại A=[m,n] C là tập hợp các số tự nhiên có 3 chữ số giống nhau D là tập hợp các số tự nhiên chia hết cho 3 E =[a thuộc N / 5<a<10 F =[6,7,8,9]
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