What is a version of mac Os X?

Answer:
The first version of Mac OS X appeared in 2001 and was numbered version 10.0 it had the name "Cheetah". Subsequent releases increased the point number and had a big cat name.

They were:


10.1 "Puma"
10.2 "Jaguar"
10.3 "Panther"
10.4 "Tiger"
10.5 "Leopard"
10.6 "Snow Leopard"
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