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You can use AIIMS MBBS College Predictor 2018 – AIIMS MBBS aspirants can check which AIIMS Institute they may get on the basis of their AIIMS MBBS 2018 rank through AIIMS MBBS 2018 college predictor. The link to the predictor is given below.

https://googleweblight.com/i?u=https://medicine.careers360.com/articles/aiims-mbbs-college-predictor&hl=en-IN

And you can also go through the last year's cut off marks to get some idea. 

Category - SC/ST 

Qualifying Cutoff Percentage - 40%

Merit Cutoff Percentile - 94.1220114

For more detailed information you can refer to this website - https://googleweblight.com/i?u=https://medicine.careers360.com/articles/aiims-mbbs-cut-off&hl=en-IN