Math Chapter Wise question with answer

Q01 The solution of the equations 3x + 5y – 7z = 13 4x + y – 12z = 6 2x + 9y – 3z = 20 by Cramer's rule is English · PGT 2009 Q02 The values of x,y,z by Cramer's rule from the equation x+y+z= 4, 2x–y+2z = 5 and x–2y–z =–3 are English · TGT 2010 Q03 Consider the following statements: I. If A is skew-symmetric matrix, then A2 is symmetric. II. Trace of a skew-symm... English · LT 2018 Q04 Let A = 0 0 -1 0 -1 0 -1 0 0 The only correct statement about the matrix A is: English · EMRS PGT-2023 Q05 The system of equations: ax + y + z = α –1 x + αy + z = α –1 and x + y + αz = α –1 has no solution, if α is: English · EMRS PGT-2023 Q06 If α and β are the roots of the equation x2 + x + 1 = 0 then 1 β α β α β equals: English · EMRS PGT-2023