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)
Piyush pachauri Best Answer
Option C is correct. M:R^5 to R^2 , So nullity cannot be 2 or 0 because it implies rank =3 or 5 which is not possible. So ABD are discarded