=10+48

=58

Giải: Hai số tự nhiên liên tiếp có tổng bằng 2011 là:

( 2011 + 1 ) : 2 = 1006

( 2011 - 1 ) : 2 = 1005

Vì khoảng giữa có 9 số chẵn nên ta có:

Số nhỏ là : 1005 – 9 = 996

Số lớn là : 1006 + 9 = 1015

chắc chắn 100% nhe các bạn

lớn=248 bé=124

252

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Bn có thể tham khảo:

Mobile phones have changed our lifestyle forever, but not all the changes are for the best. Discuss the pros and cons of owning a mobile phone.

Our lives have greatly changed thanks to the development of modern technology including mobile phones. Some people believe that mobiles bring only benefits to human beings. However, they also have some disadvantages.
Mobile phones are the best way for us to communicate with each other. We can make a phone call or send a message to our friends, families and colleagues much easier and quicker. In addition, it is more convenient when using mobile phones, especially with people who usually have to move long distances. For example, my father works very far from home and he always comes home at weekend. Therefore, he uses a mobile to keep in touch with my mother and me to make sure everything at home is all right. Sometimes, he call us to announce that he has to work overtime. In this occasion, using mobile is the quickest and cheapest way of communication because his office do not allow staff use telephone for private and my father do not have enough money to buy a laptop so as to connect the Internet.
Moreover, modern mobiles have a lot of functions. Some mobile phone producer have introduced many types of mobiles which can be used as cameras or video recorders. Most mobiles are designed to replace music players or even computers. Thus, we can not only talk to others but also see them on the screen.
However, mobile phones cause some problems. The first one is the time we spend on them. For instance, young people like students spend much time on talking with friends by mobiles. While adults such as businessmen use mobile phones for its major function, younger usually uses them for listening to music or playing games. Hence, young people depend much on mobiles that some of them become addicted to mobile phones. Furthermore, mobile phones are difficult to clean. According to some latest studies, a mobile phone is much dirtier than a bathroom so that it can make people who own it become sick.
In conclusion, mobiles have changed our lifestyle forever since they were invented. Despite they have some disadvantages, they are essential in modern life.

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