How can I extract a certain page range from a PDF?

You can make a new document extracting some pages. You can specify different ranges of pages to extract them.

Steps

To extract some pages

1. Open a document containing more than 10 pages.
2. Click Tools > Extract Pages or click the Extract Pages icon in the Tools toolbox.
3. In the Extract Pages dialog box, select Partial and type '2-4,7-10' in the input box.
4. Click OK to create a new document.
5. Click File > Save As to save a new document.