A hobby that I enjoy is using the computer. Surfing the internet is what I mostly do whenever I have free time.

No one can deny the benefits of Internet. Information resources are probably the biggest advantage that Internet offers to people. Internet is wonderful source of information. All kind of information on any topic is available on the Internet at anytime. I love searching things on Google. It’s a very useful tool from the Internet, we can know everything with just one mouse click.

Becoming knowledgeable is also a great benefit of using Internet. I spend a lot of time on the Internet for reading news. All latest news is continuously up-to-date on the Internet on various news sites. I often visit E-newspaper websites to read hot daily news. I can know everything such as current issues that happen in this world, what happen to our country, celebrities life, recent fashion, and other news that can enhance my knowledge. I would rather using Internet for updating news because it is available everywhere at anytime.

p+2015 chia hết cho p+2

=>p+2013+2 chia hết cho p+2

=>2013 chia hết cho p+2

=>p+2=1;2013

=>p=2011

vậy p=2011