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 according to me no short trick....
for full solution see jeevesh sir cmnt
yes sir, you are right, there can't be any short trick. Actually I wanted to know a general method for such type of ques, that Jeevesh sir has sent.