Mathematics, 21.06.2021 15:30 KarateKat

Su kien - Các lớp học phân Gia Lớp học phần này Marker Tools Thoát khỏi hoạt động Resources OUTLINE Search NOTES Trắc nghiệm 6: Một lớp học có 20 học sinh thi ba môn toán, lý, hóa. Kết quả có 16 học sinh thi đỗ môn toán, 15 học sinh thi đỗ môn lý và 14 học sinh thi đỗ môn hóa. Có 14 học sinh thi đỗ cả môn toán và lý, 12 học sinh thi đỗ cả môn lý và hóa, 12 học sinh đỗ cả toán và hóa, 5 học sinh đỗ cả ba môn. Chọn ngẫu nhiên 1 học sinh, gọi A, là biến cố học sinh thi đỗ môn toán, A, là biến cố học sinh thi đỗ môn lý, Ag là biến cô học sinh thi đỗ môn hóa, xác suất để học sinh đó thi đỗ ít nhất 1 môn là

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