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)
Chandra prakash
dear I am attaching 2 pics which is not solution of your prob but. it's example of how to find these type of prob..best regards
see attached file it's very helpful for you
see this
if u have any doubt regarding this prob u can ask