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)
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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.