Tier 1 — High Probability Colleges for Rank 7,000–13,000 (OS)
Colleges where the final closing rank is at least 400+ above the band midpoint (10,000) under OS/AI quota
IIT Roorkee is the most reliable safe option(s) in the 7,000–13,000 band for OS/AI candidates. Candidates with ranks in the lower half of this band are comfortably inside the historical closing rank.