Question

when we save a document with file name extension is ....................................................​

Answer 1

Explanation:

Documents, templates, worksheets, and presentations that you create in Office 2007 are saved with new filename extensions with an x or an m. For example, when you save a document in Word, the file now uses the . docx extension, instead of the . doc extension.

I hope this answer will help you

Answer 2

Explanation:

Documents, templates, worksheets, and presentations that you create in Office 2007 are saved with new filename extensions with an x or an m. For example, when you save a document in Word, the file now uses the . docx extension, instead of the . doc extension.

Hope this helps you