According to your score in COMEDK your expected rank is between 23000 to 35000. The closing rank of CSE branch for B.N.M. Institute of Technology is around 13000 as per the last year cut off. It is difficult for you to get CSE in B.N.M. Institute of Technology, you can try for Electrical and Electronics engineering in the same college according to your expected rank. 

Hi, 

According to 2017 cut off for CSE, the closing rank is 3306. Refer the link below for more details

https://www.careers360.com/colleges/bnm-institute-of-technology-bangalore/cut-off

Hope it helps!