xlsx is the main extension used for Excel 2007.
In 1975 Microsoft office was created by Bill Gates.
Microsoft Office Mobile was created in 2000-04.
In Microsoft Office 2007 and 2010, the extension is .pptx, whereas in earlier versions it was .ppt.
Microsoft Office PerformancePoint Server was created in 2007.
Microsoft Office XP was created on 2001-03-05.
The olp file type (extension) was used by Microsoft for Office Live Package(?) to allow for the backup and restoring of Office Live websites.
DOCX is the filename extension for Microsoft Office 2007 Word documents. DOCX files do not contain macros. The old DOC extension is being phased out by Microsoft.
Microsoft Word started using docx files in 2007
.xls for the lower version If you are using the Microsoft Office 2007, it's .xlsx
Microsoft Access is a part of Microsoft Office. Microsoft Access was created by the Microsoft Corporation and it was first released in November, 1992.
the Microsoft word files are called document
Yes. DOCM is a Word Microsoft Office Open XML Format document. It is opened by default by Word 2007 upwards. For earlier versions of Word (2003 and below), you'll have to download the Microsoft Office Compatibility Pack for free from Microsoft's website.