Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
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Satyam Singh
its one of the hardest question (for some people it may be simple but really really hard for me) since it's using galois group and frobenius morphism I tried to solve it hope. it will help you.