Determinants_4

The system of equations : 5x + ky = 5 ; 3x + 3y = 5 will be consistent if

• 4

• 2

• -2

• -4

The matrix is not invertible

• 1

• None of these

If for the matrix A, A³ = I then A^-1 =

• A

• None of these

The inverse of a skew symmetric matrix of odd order

• is a symmetric matrix

• is a diagonal matrix

• is a skew-symmetric matrix

• Does not exist

Find x if

• 2

• -1/2

• 1

• 1/2

Which of the following statements is not true?