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).
.key Extension-List of programs that can open .key files. In the following table, you can find a list of programs that can open files with .key extension.This list is created by collecting extension information reported by users through the 'send report' option of FileTypesMan utility.