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Mathematics, 17.06.2021 08:00 Dariana123

bạn thủy bốc 1 viên bi từ hộp 1 có 6 đỏ 7 xanh 8 vàng 9 trắng .bạn lợi bốc ngẫu nhiên 1 bi từ hộp 2 có 4 đỏ 3 xanh 2 vàng 1 trắng biết rằng 2 bi bốc ra cùng màu ,tính xác suất để 2 bi là màu đỏ

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bạn thủy bốc 1 viên bi từ hộp 1 có 6 đỏ 7 xanh 8 vàng 9 trắng .bạn lợi bốc ngẫu nhiên 1 bi từ hộp 2...
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