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Mathematics, 17.06.2021 22:10 mckennacwilliams

Một hoppj gồm 7 thẻ xanh đánh số từ 1 đến 7 và 3 thẻ vàng đánh số từ 1 đến 3 . Chọn ngẫu nhiên 1 hộp. Tính xác xuất được thẻ đánh số chẵn biết rắng đã đánh được thẻ xanh

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Một hoppj gồm 7 thẻ xanh đánh số từ 1 đến 7 và 3 thẻ vàng đánh số từ 1 đến 3 . Chọn ngẫu nhiên 1 hộp...
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