PPTX is the new file format for Powerpoint slideshows. Have you ever created one for a presentation. Then you found out that the computer your are going to use for your presentation doesn't have Powerpoint. Or it has an older version of Powerp...
.PPTX
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With the introduction of Microsoft Office 2007 Microsoft introduced new file formats for the included programs. They are: .DOCX (For Word) .XLSX (For Excel) .PPTX (For Powerpoint)
