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Mathematics, 31.07.2021 04:20 adriannacomrosenbark

Hộp có 10 quả cầu gồm 3 quả trắng và 7 quảđen. Lấy ngẫu nhiên từ hộp 1 quả cầu. Tìm xác suấtlấy được cầu trắng.

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Hộp có 10 quả cầu gồm 3 quả trắng và 7 quảđen. Lấy ngẫu nhiên từ hộp 1 quả cầu. Tìm xác suấtlấy được...

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