Hi Raj, yes. A candidate of any State can apply for a seat in Assam through All India Quota. You haven't mentioned your Category. Neverthless the cut offs for various Categories under All India Quota are as follows:

General Category: 537
SC: 423
ST: 400

Having said that cut off changes every year and is dependant on various factors like no.of seats available, no.of candidates appearing for the exam, top NEET score and difficulty of the exam. Meanwhile, please visit this page to check the cut offs for each of the colleges:
https://medicine.careers360.com/articles/neet-cutoff-assam/amp#referrer=https://www.google.com

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