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)
Satpal singh
i think u r asking about 21st question. see this video https://youtu.be/eXqPxKY8_Jw in this 4th question is ur problem . see that part