Math Chapter Wise question with answer

Q01 If A and B are invertible matrices, then which of the following is not correct? English · SECTION B PGT TIER-I 31.11.2014 Q02 A square matrix A is invertible if and only if: English · UP PCS (Pre) 1997 Q03 If A and B are square matrices of order 3 such that det A = −1 and det B = 3, then is: English · NVS PGT 2022 Q04 If A = 1 2 1 0 andB 3 5 0 2 = − are two matrices and X is a matrix such that A = BX, then matrix X is: English · KVS PGT 2022 Q05 If A and B are idempotent matrices of same order, then AB is idempotent matrix if and only if: English · DSSSB PGT 2021 Q06 If A and B are orthogonal matrices and det(A) + det(B) = 0 then (A+B) is a English · DSSSB PGT 2021