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)
Ronak kumari upadhyay
Dear student There are so many platforms on YouTube which will help you out for this particular portion of reasoning. i am sharing a link with you https://youtu.be/TQiHPLr9nEk and there are so many different link also available there.