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)
Ujjawal vishal
If A is a non zero matrix and A^k =0 then A is called nilpotent matrix. And, remember only nilpotent matrix which is diagonalizable, is null matrix. but here N is non zero ,so it is not diagonalizable. so, option a is correct and b is not correct. Clealry, N can't have 3 linearly independent eigen vectors otherwise it would make it diagonalizable which is not true in case of non zero nilpotent matrix. An example attached which shows it can have non zero eigen vectors. we have find eigen vectors at eigen values 0. So, option C ia correct and D is false.