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phmahuong0908
2 năm trước
Chọn tập hợp `L` = { n / n = 2k +1 với k ∈ N } a, Nêu bốn số tự nhiên thuộc `L` và hai số tự nhiên không thuộc `L` b, Hãy mô tả tập hợp `L` bằng hai cách nêu dấu hiệu đặc trưng theo một cách hác + Giải thích
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