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
B^2×A = B(BA) =B.B = B^2 similarly A^2×B = A(AB) = A^2 ABA = AB = A BAB =BA =B So All options are correct