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isaacdat2000
2 năm trước
Câu 3: Tính (6 điểm) a . 34 – 12 + 56 - 77 b . 8 .( 125 - 3000) Câu 4: (1 điểm) a. Tìm tất cả các ước của - 15 b. Tìm sáu bội của 7 Câu 5 : (1 điểm ) S = 1+ 2+ 2^2 + 2^3 + …+2^10
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