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)
Vaibhav jain
Yes all the symmetry elements (viz. rotation axis and rotoinversion, planar symmetry and point symmetry) and their combination (i. e. point groups) are important for IIT JAM.