They are stored wherever the user wants to save them to. There is usually a default folder to save them to that can be set in the options in Excel. Normally it is the user's My Documents folder. It can be changed and the user is free to save a file wherever they want to if they don't want it to go to the default folder, so there is no single answer to the question.
They are spreadsheet files and Excel refers to them as workbooks.
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In Excel you calculate and have alarge number of formulae to perform a variety of operations on the numbers you put into clls. In Word you write text and format written documents.
Usually for excel documents I use other interesting programs, but one day I observed at the I-net a good tool, which to my great surprise solved out my old troubles with excel documents, indeed I hope the tool will help in this condition too.
In Excel you can choose landscape or portrait from the print menu, the default is normally portrait.
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In Excel
You can store documents on a drive that you attach or put into your computer. It is a backup drive to store things such as pictures, documents, etc. so you don't lose them.
Open Office Documents, Wordperfect Documents, Write Documents, RTF files. Depending on the context, if you mean like as in proprietary or made by Microsoft, this could be Excel Documents.
Some common types of documents used in data processing include spreadsheets (e.g. Excel), databases (e.g. SQL), text files (e.g. CSV), and XML files. These documents are used to store, organize, and manipulate data for various data processing tasks.
You can not merge excel documents into notepad, but you can copy data from Excel and paste it into notepad if you want to remove all of the formatting and have only plain text.