Предмет: Алгебра, автор: kcpdiman83

На конференции по стандартизации некоторого языка программирования участники обсуждают нововведения. Причём каждая тройка участников обсудила ровно одно нововведение между собой и никакие две тройки, различающиеся по составу хотя бы одним участником, не обсуждали одно и то же нововведение. Известно, что за всю конференцию участники обсудили 816 нововведений. Сколько человек участвовали в конференции по стандартизации?

Ответы

Автор ответа: kulakovaangelinapavl

Ответ:

3990 человек участвовали в конференции по стандартизации.

Пошаговое объяснение: 1330*3-3990 человек

kcpdiman83: Неверно. Нужна формула простейшей комбинации.

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Срочно!!!ответь на вопросы после текста!
INTRODUCTION TO THE WWW AND THE INTERNET
Millions of people around the world use the Internet to search for and retrieve information on all sorts of topics in a wide variety of areas including the arts, business, government, humanities, news, politics and recreation. People communicate through electronic mail (e-mail), discussion groups, chat channels and other means of informational exchange. They share information and make commercial and business transactions. All this activity is possible because tens of thousands of networks are connected to the Internet and exchange information in the same basic ways.
The World Wide Web (WWW) is a part of the Internet. But it's not a collection of networks. Rather, it is information that is connected or linked together like a web. You access this information through one interface or tool called a Web browser. The number of resources and services that are part of the World Wide Web is growing extremely fast. In 1996 there were more than 20 million users of the WWW, and more than half the information that is transferred across the Internet is accessed through the WWW. By using a computer terminal (hardware) connected to a network that is a part of the Internet, and by using a program (software) to browse or retrieve information that is a part of the World Wide Web, the people connected to the Internet and World Wide Web
through the local providers have access to a variety of information. Each browser provides a graphical interface. You move from place to place, from site to site on the Web by using a mouse to click on a portion of text, icon or region of a map. These items are called Hyperlinks or links. Each link you select represents a document, an image, a video clip or an audio file somewhere on the Internet. The user doesn't need to know where it is, the browser follows the link.
All sorts of things are available on the WWW. One can use Internet for recreational purposes. Many TV and radio stations broadcast live on the WWW. Essentially, if something can be put into digital format and stored in a computer, then it's available on the WWW. You can even visit museums, gardens, cities throughout the world, learn foreign languages and meet new friends. And of course you can play computer games through WWW, competing with partners from other countries and continents.
Just a little bit of exploring the World Wide Web will show you what a much of use and fun it is.

Вот вопросы:
Answer the questions:
1) What is Internet used for?
2) Why so many activities such as e-mail and business transactions are possible through the Internet?
3) What is World Wide Web?
4) What is a Web browser? 5) What does user need to have an access to the WWW?
6) What are hyperlinks?
7) What resources are available on the WWW?
8) What are the basic recreational applications of WWW?
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