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)
Shreyasi majumdar 1
For differentiation and integration, class 11 and 12 ncert maths is enough. for exact and inexact differentials refer https://drive.google.com/file/d/17zL4Lnwdi64OVA0hs2eJjVD5mFAouWzU/view?usp=drivesdk Also solve KL kapoor questions