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thuydiempham96
2 năm trước
Trong một hộp đựng 6 quả cầu trắng và 8 quả cầu xanh , lấy ngẫu nhiên 2 quả. Xác suất để lấy được một quả cầu trắng và một quả cầu xanh là :
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

GIÚP MÌNH VOIƯ , MÌNH GÕ KHỔ LẮM ĐÓ MAI MÌNH CẦN RỒI II/complete the second sentence in such a way that is has the same meaning as the first one. 1.can you correct this composition for me? => Would you mind 2.To make this math is difficult. => It's 3. The last time I saw her was in 2005 I haven't 4. A new bridge is going to be built next year they are 5.The Smíth have tidied the house for tet the house 6.the last time he met was in2005 he hasn't 7.they will build a new school in my neighborhood a new school 8.they advised us to take a bus downtown we were 9.the chinese invented paper in the century A>D paper 10. they made the fire in the traditiponal way the fire 11. my friend on longer comes late for class my friend 12.it's three years since i last saw Nam i haven't 13. ưe often lived in a small house when we were young we used 14.Sarah is better at chemistry than Susan Súan isn't GIÚP MÌNH VOÍư ,MAI MÌNH CẦN RỒI ,MÌNH GÕ KHỔ LẮM ĐÓ

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