@Marko :) if you are running lot's of software then yes your running processes will be increased.
But i am talking only about Windows processes.
In task manager you can your processes for your apps and after that you can see windows processes.
As
@venustus said it's more than 80 and that's the case on my laptop. But on my wife's pc is just over 30 processes.
That's the number i thought was right but now...
Anyway i am using W7 as my main system because it's lighter for my old laptop, i only use W10 as a secondary system.