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ahvana2101
2 năm trước
1/ Lớp 6H có 30 học sinh. 20 người trong số họ thích Toán học, 18 người trong số họ thích Khoa học và 15 sinh viên thích cả hai. Có bao nhiêu học sinh không thích cả Khoa học và Toán học? 2/ Số phần lớn nhất có thể thu được khi cắt một đĩa tròn bằng 3 lần cắt thẳng là bao nhiêu?
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