Yes, at least one of the versions will work on a Mac, depending upon your operating system and version of the Excel software. Most people on Macs have to use one of the "No Macros" versions - either Excel 2003 or Excel 2007, depending upon your version of the Excel software.
If you have technical problems or can't figure out which version works, give the office a call or email them (800.576.GMAT or
studentservices@manhattangmat.com) and somebody will help you figure it out!