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Mathematics, 31.07.2021 06:20 marieb39
Trong một chiếc hộp đựng 6 viên bi đỏ, 8 viên bi xanh, 10 viên bi trắng. Lấy ngẫu nhiên 4 viên bi. Tính số phần tử của:
1. Không gian mẫu
2. Các biến cố:
A: " 4 viên bi lấy ra có đúng hai viên bi màu trắng"
B: " 4 viên bi lấy ra có ít nhất một viên bi màu đỏ"
C: " 4 viên bi lấy ra có đủ 3 màu"
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Answers: 2
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Trong một chiếc hộp đựng 6 viên bi đỏ, 8 viên bi xanh, 10 viên bi trắng. Lấy ngẫu nhiên 4 viên bi. T...
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