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As per your query cut off for Computer Science vary every year, and it is quite difficult to share exact cutoff but we can predict through previous year cutoff:

Category                Minimum Qualifying Marks or Cut Off

General                     50%
OBC                           40%
SC                               40%
ST                               40%

Colleges wise computer Science Cutoff 2021 of KCET:

-> Visvesvaraya Technological University, Belagavi: 962
-> RV College of Engineering, Bangalore: 315
-> BMS College of Engineering, Bangalore: 925
-> NMAM Institute of Technology, Karkala Taluk: 5673
-> Siddaganga Institute of Technology, Tumkur: 6274
-> PES College of Engineering, Mandya: 16483
-> BMS Institute of Technology and Management, Bangalore: 5231
-> New Horizon College of Engineering, Bangalore: 8731

Note that this Ranks is for General Category

To now more about KCET Cutoff checkout given link below:
https://engineering.careers360.com/articles/kcet-cutoff

Hope you found it helpful
All the best!!!