In a skew-symmetric matrix, every principal diagonal element is

In a skew-symmetrix matrix, the diagonal elements are all

If A is a skew-symmetric matrix and n is odd positive integer,then A^(n) is a skew-symmetric matrix a symmetric matrix a diagonal matrix none of these

The inverse of a skew symmetric matrix of odd order is 1)a symmetric matrix 2)a skew symmetric matrix 3)a diagonal matrix 4)does not exist

If A is a square matrix,then AA is a (a) skew- symmetric matrix (b) symmetric matrix (c) diagonal matrix (d) none of these

If every non diagonal element in matrix A is zero and every diagonal element is equal then A Square matrix A is said to be a

If every non diagonal element in matrix A is zero and every diagonal element is equal then A Square matrix ‘A’ is said to be a

If every non diagonal element in matrix A is zero and every diagonal element is Unity then A Square matrix A is said to be a

The matrix [(0, 5,-7),(-5, 0, 11),( 7,-11, 0)] is (a) a skew-symmetric matrix (b) a symmetric matrix (c) a diagonal matrix (d) an upper triangular matrix

If A is skew-symmetric matrix, then trace of A is