If A is singular then A(adjA)=?

Statement I There are only finitely many 2x2 matrixces which commute with the matrix [[1,2-1,-1]] Statement II If A is non-singular, then it commutes with I,adjA and A^(-1)

If A is a singular matrix,then adj A is a. singular b.non singular c.symmetric d.not defined

If A is a non-singular matrix, then A (adj.A)=

If A is a singular matrix, then what is A(adjA) ?

If A is a singular matrix, then adj A is a. singular b. non singular c. symmetric d. not defined

If A is a singular matrix, then adj A is a. singular b. non singular c. symmetric d. not defined

If A is a singular matrix, then adj A is a. singular b. non singular c. symmetric d. not defined

If A is a singular matrix, then adj A is a . Singular b . non singular c . symmetric d . not defined

If A is a singular matrix, then adj A is.... a) singular b) non singular c) symmetric d) not defined

if A is a singular matrix , then adjA is