If x is square materix of order `3xx3` and `lambda` is a scalar, then adj `(lambda X)` is equal to

If A is a square matrix of order 3xx3 and lambda is a scalar, then adj (lambdaA) is equal to -

If A is a square matrix of order nxxn and k is a scalar, then adj(kA)=

Which of the following is/are correct ? (i) Adjoint of a symmetric matrix is also a symmetric matrix. (ii) Adjoint of a diagonal matrix is also a diagonal matrix. (iii) If A is a square matrix of order n and lambda is a scalar, then adj ( lambda A)= lambda^(n) adj(A) (iv) A (adj A) = (adj A) A = |A| I

If A is a square matrix of order n xx n and k is a scalar, then adj (kA) is equal to (1) k adj A (2) k^n adj A (3) k^(n-1) adj A (4) k^(n+1) adj A

If A is a square matrix of order n xx n and k is a scalar, then adj (kA) is equal to (1) k adj A (2) k^n adj A (3) k^(n-1) adj A (4) k^(n+1) adj A

If A is a square matrix of order n xx n and k is a scalar, then adj (kA) is equal to (1) k adj A (2) k^n adj A (3) k^(n-1) adj A (4) k^(n+1) adj A

If A is a square matrix of order 3xx3 and abs(A) = 5 then abs (Adj. A) is :

If A is a square matrix of order n xx n then adj(adj A) is equal to