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)
Alka gupta
correct answer is B.....see
in which chapter will we get this formula and in which book ??
this is JEE topic....so you need to see any JEE advanced books
from which topic ??