In which of the following locations can you edit all of the properties of a powerpoint file?

Access the File menu, choose Info Pane to get to Backstage view, you can see Properties on the area on the right side of the current PowerPoint presentation.  Within the Properties pane click the Show All Properties  option , This will displays properties such as Size, the number of Slides,  Hidden Slides, the number of Multimedia Clips, etc.  Some of the entries are editable within the  Properties pane, and some are not. Just move your mouse cursor over any detail of a property. The editable sections will change the cursor into edit mode.  

The base for a hexadecimal number system is 16