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)
Deepak singh 1 Best Answer
yes , its correct Answer is 2
but in the book, they have a different solution.
there May be calculation mistake . let me check
on solving , I m also getting same answer as yours . So there is calculation mistake in book.