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)
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.