Matrices Test -...

The product of two matrics  

If A, B are, respectively m ×n, k ×l matrices, then both AB and BA are defined if and only if ​

and 2A + B + X = 0, then the matrix X = ……

If   then -5A = ?

If    and  , then AXB=?

If    and  , then = 2A - B?

If    and  , then AB = ?

Value of determinant is computed by adding multiples of one row to

If    and  , then AB = ?

For a skew symmetric even ordered matrix A of integers, which of the following will not hold true:

If A is a matrix of order 1 ×3 and B is a matrix of order 3 ×4, then order of the matrix obtained on multiplying A and B is ​

If    and  , then A-2B is equal to

If    and   then AB = ?

If A and B are two matrices conformable to multiplication such that their product AB = O(Zero matrix). Then which of the following can be true ​