Math Chapter Wise Matrices And Determinants English MCQ UP PCS (Pre) 2001 Q.If 0 1 0 -2 1 3 A = and B = 2 3 1 2 1 -1 are two matrices then: AAB exists but BA does not exist BBA exists but AB does not exist CAB and BA exist and AB=BA DAB and BA exist but AB≠BA Show answer Correct answer: AB and BA exist but AB≠BA