[" In a skew symmetric matrix,the diagonal elements "],[" are all "]

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

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

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 and B are symmetric matrices, then A B A is (a) symmetric matrix (b) skew-symmetric matrix (c) diagonal matrix (d) scalar matrix

If A and B are symmetric matrices, then A B A is (a) symmetric matrix (b) skew-symmetric matrix (c) diagonal matrix (d) scalar matrix

If A and B are symmetric matrices,then ABA is (a) symmetric matric b) skew-symmetric matrix (c) diagonal matrix (d) scalar matrix

Assertion (A) : If A=[(x,3,-10),(-3,y,9),(10,-9,z)] is a skew symmetric matrix then Tr(A)=0 Reason (R) : If A is a skew symmetric then all the elements in a principle diagonal are equal to zero.

If A is skew symmetric matrix, then A^(2) is a symmetric matrix .

A matrix which is symmetric as well as skew symmetric (A)null matrix (B)diagonal matrix (C)both A and B (D)none of these