Math Chapter Wise Matrices And Determinants English MCQ UKPSC Lecturer (Mains) 2020 Q.The inverse of the matrix 3 8 2 1 is: A1 8 1 2 3 13 − B1 8 1 2 3 13 − C1 8 1 2 3 13 − DNone of these Show answer Correct answer: 1 8 1 2 3 13 −