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)
Ankur Rao
but answer is given 1/27
check again , is your question correct ..
this is given
there mistake in question question may this one if answer is 1/27