Hello,
At a score of 90 marks in COMEDK 2018 one can definitely expect a rank under 15000 and in between 13000-15000 depending upon level of question paper and number of students appearing in the exam.
Good luck.

U can use carreer 360 rank predicator it will give u clear picture

Hii Matta saatwika

Please use career360's rank predictor to predict your rank.

Link given below-

https://engineering.careers360.com/comedk-rank-predictor

Hope this help.