Hello,

It is quite difficult to indicate a particular score so as to secure a rank around thirty thousand it is because the marks vs rank trend varies every year depending on the highest score in KCET, number of candidates appeared for KCET etc. To secure a rank around thirty thousand you should aim to score minimum 58-68 marks or above in KCET. This is an estimated score the actual rank with the given score may vary. You may check the KCET Marks vs Rank trend for reference purpose using the link below

https://engineering.careers360.com/articles/kcet-marks-vs-rank