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Mathematics, 25.07.2021 20:20 destinybonmer

3.Cho đa giác đều 12 đỉnh nội tiếp đường tròn tâmA. Chọn ngẫu nhiên 3 đỉnh của đa giác đó. Tính xác suất để 3 đỉnh được chọn tạo thành một tam giác không có cạnh nào là cạnh của đa giác đã Cho

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3.Cho đa giác đều 12 đỉnh nội tiếp đường tròn tâmA. Chọn ngẫu nhiên 3 đỉnh của đa giác đó. Tính xác...
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