Hello aspirant. You have not told anything about your category. If you have told your category I would have told you the cut off for your particular category but there are lots of categories with different cut offs. I am providing you with a link. Choose your category there and see cut off for 2018 1st, 2nd and 3rd round.

Link:- https://www.collegepravesh.com/cutoff/cet-trivandrum-cutoff-2018/

Regards