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)
Dhairya sharma
for drawing graphs from matrices you have to find adjacent of the matrices and will have to satisfied condition for isomorphisms.find one more matrix and solve it and trace it. with best regards.