History of Mac OS

System 7 and earlier

100

The version of System Software introduced with the Mac Plus

What is System 3?

200

The year System 6 came out

What is 1988?

Mac OS 8 and 9

100

The version of Mac OS released shortly after Steve Jobs' return

What is Mac OS 8?

200

Release year for Mac OS 9

What is 1999?

Mac OS X Cheetah through Tiger

100

Codename for the second version of Mac OS X

What is Mac OS X 10.1 Puma?

200

The first version of Mac OS to support Intel processors

What is 10.4 Tiger?

Mac OS X Leopard through Mavericks

100

The naming scheme for all Mac OS X versions until Mavericks

What are big cats?

200

The last version of Mac OS X to support PowerPC (not Intel) processors

What is 10.5 Leopard?

OS X Yosemite and newer

100

The naming scheme for all OS X versions since Mavericks

What are famous California landmarks?

200

The latest version of macOS as of October 2019

What is macOS Catalina 10.15?