Hello Aspirant,
See the details you have asked are not made public until the exam is being conducted successfully and after the successful conduction of exams some media surveys use to show these type of reports. Note that there is no any separate admission test for NIT Meghalaya, if you wants to pursue B.Tech from any of the NIT then you have to appear for JEE-Main and should clear it with good score to get good NITs and your wished branch.
As per the latest notification issued by NTA regarding number of registrations, a total of 8,58,273 candidates have registered for JEE Main 2020 April exam (now scheduled from September 1st-6th) out of which 746115 have applied only for B.Tech.
For more details refer to the link given below :-
https://news.careers360.com/jee-main-2020-sept-registration-statistics-released-7-12-percent-decrease#:~:text=NEW%20DELHI%3A%20The%20National%20Testing,applied%20only%20for%20B.Tech.
I hope this information cleared your doubts.
Good Luck!!
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