Mathematics, 28.07.2021 20:00 jamesmarsdel

Một nhóm gồm 10 sinh viên (SV) trong đó có 2 SV giỏi, 3 SV khá và 5 SV trung bình. Gọi kiểm tra ngẫu nhiên cùng một lúc 3 SV. Tính xác suất để trong 3 SV đã gọi có đủ cả ba loại giỏi, khá, trung bình.

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Một nhóm gồm 10 sinh viên (SV) trong đó có 2 SV giỏi, 3 SV khá và 5 SV trung bình. Gọi kiểm tra ngẫu...