If A is a non-singular matrix, then which of the following is not true ?

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Invertible Matrix and Its Definition, Adjoint of a Square Matrix, Singular and Non-Singular Matrices | PadhAiPro

Question

MCQ (Single)Invertible Matrix and Its DefinitionAdjoint of a Square MatrixSingular and Non-Singular Matrices

Let A = [a b; c d] be a square matrix such that adj A = A. Then, (a + b + c + d) is equal to :

If A is a square matrix of order 3 such that the value of |adj·A| = 8, then the value of |Aᵀ| is :

Determinant of a Square Matrix

Adjoint of a Square Matrix

For the matrix A = [2 -1 1; λ 2 0; 1 -2 3] to be invertible, the value of λ is :

If A is a square matrix of order 3 such that |adj·A| = 8, then the value of |Aᵀ| is :

Let A be a 3 × 3 matrix such that |adj A| = 64. Then |A| is equal to :

If [1 2 1; 2 3 1; 3 a 1] is non-singular matrix and a ∈ A, then the set A is