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nguyenthiaily12072004
2 năm trước
Tổng (hiệu) sau là số nguyên tố hay hợp số,giải thích vì sao? A = 4.5.6+9.11.13 B = 7+7^2+7^3+7^4+7^5 C = 123456789+729 D = 2001.2002.2003.2004+1
Thích Trả lời Chia sẻ

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