Hi Sheer.

In TNEA 2018, for other state quota students, only 53 seats are given. And that was only through 3 colleges, previously. i don't know whether the no. of colleges has increased or not. The whole seats are divided into General and SC/ST category for 4 regions and a seat for Kashmiri migrant. For more details regarding this, pleae go through this article. -

https://engineering.careers360.com/articles/tnea-for-other-state-students

Good Luck.