There are 2 pints in 1 quart, so there will be 3 pints in 1 and 1/2 quarts.
Hi Niki, I understand that Windows Reader is the default Viewer for PDF files. What I was asking was how this was stored in the registry. The key HKEY_CLASSES_ROOT\.pdf key has (Default) = AcroExch.Document (if you have Acrobat Reader installed). In Windows 8 the .pdf key has (Default) =  (blank).
1 By default, the system root folder for Microsoft Windows is C:/Windows. 2  However, this can be changed for several reasons. 3  The active partition on a hard drive could be designated by a letter other than C:, or the operating system might be Windows NT, in which case the system root folder is C:/WINNT by default.