Math Chapter Wise question with answer

Q01 If A is an invertible matrix of order 2, then det (A-1) is equal to English · Bihar (TRE 2.0)-2023 Q02 If A is a square matrix such that A2 = I, then (A – I)3 + (A + I)3 – 7A equals: English · NVS PGT 2022 Q03 If A = 1 2 2 1 2 1 –2 3 x 2 y is an orthogonal matrix, then (x +y) is equal to - English · RPSC PGT 2022 Q04 If a matrix 5 8 6 3 2 4 1 7 9 is expressed as A+B, where A is symmetric and B is skew - symmetric, then B is equal... English · UPPSC GIC 2021 Q05 If A is a square matrix such that A2 = 2A–I, where I is a unit matrix, then for all natural numbers n≥2, An is equa... English · UKPSC Lecturer (Mains) 2020 Q06 If 1 1 1 A 1 2 3 2 1 3 = − − and A3 – 6A2 + 5A + 11 I = 0, where I is a 3×3 identity matrix, then A-1 is equal to: English · UKPSC Lecturer (Mains) 2020