is rigorous number theory and combinatorics nedded for iitjee???????

Hello student,
Please find the answer to your question below
Number theory forms the basis of many questions in IIT JEE. but u may not find many questions in IIT JEE only on number theory and combinatorics but 2-3 questions may definitely come from them.But If you want a very good rank in IIT JEE you should not leave any topic