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annvuy
2 năm trước
Một hộp có 10 quả cầu xanh được đánh số từ 1 đến 10 ,20 quả cầu đen được đánh số từ 1 đến 20 .Chọn ngẫu nhiên 4 quả cầu trong hộp tính xác suất sao cho quả cầu được chọn có màu đen hoặc ghi số lẻ.Mọi người giúp mình với
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Living in the country has many benefits: however, it has both the advantages and the disvantages Now we will talk about the advantages. Firstly, you have a healthy life. There are no dust, no smoke and no traffic jam. The air is fresh. The food is clean becuse people collect them from the garden. Secondly, living the countryside is peaceful. It is very quiet to relax after working or there are many beautiful wide fields and natural scenery. Finally, there are no separations in the countryside. Neighbors are really best friends. They will help you pleasantly if you have trouble. Each problem has its solution and your neighbors will share it for you. According to disadvantages, it has poor quality, facilities and employment .One of the drawbacks of living in the country is poor quality of education in schools there. Country schools usually do not have good facilities like for example gyms or computer rooms. Another bad side of country life is lack of entertainment. There are no things to do at night:no cinemas, no bar and no amusement park. Last but not least, the problem with finding a job is important. There are no companies or factories so the rural people don`t have a good job. 1.How many advandtage of living in the country life?

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