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)
Ujjawal vishal
actually ,union of an infinite no of closed sets is not necessarily a closed set. see the 2nd example explained in the attached solution