Hello Aspirant,
Considering you are having obc-ncl category then I would suggest that you do have chances to get into IIT Guwahati. However there are certain factors such as number of candidates appearing in the examination, previous year cutoffs and difficulty level of the paper.
For IIT Bombay the chances are slim and a bit dicy so I would suggest you to look for other colleges too.
To get more information about the cut offs then you can check out the link given below -
https://design.careers360.com/articles/uceed-cutoff
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