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)
Monika verma 1
in question in v vector there is mistake of j ,there will be i because in solution they take i not j. see the attachment for complete solution.