If A is a skew symmetric matrix of even order then l A l =
perfect square
0
not a perfect square
±1
null matrix
hermitian matrix
Unit matrix
None of these
1,1
1,-1
1,2
-1,1
If the determinant of a square matrix A is zero l A l = 0, then l adj A l =
1
-1
is
If P is two rowed matrix satisfying P' = P-1, then P is
All diagonal elements of skew symmetric matrix are
Distinct
Same zero and same non- zero
Orthogonal
Idem potent
Skew symmetric
Symmetric
3 × 1
1 × 1
1 × 3
3 × 3
