Hello Debayan
You are eligible for applying for NIT's if your total percentage are above 75% and as you have passed maths you there should be no problem for you but you should ask your school for the corrected passing certificate which says you have passed maths or else it can be a problem for you if they say your compartment marksheet will work then use that in time of verification and you shoudn't have any problem then
Hope this helps you
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