Matrices Test -...

If A is a matrix of order 3 × 4 , then each row of A has

If A and B are any two matrices, then

If, we are given a square matrix A then, Adj.(KA) = ….

The system of equations,x + y = 2 and 2x + 2y = 3 has

If P is of order 2 × 3 and Q is of order 3 × 2, then PQ is of order

A square matrix A = [a_ij]_n×n is called a lower triangular matrix if a_ij = 0 for

If A and B are any two square matrices of the same order, then

The transformation ‘orthogonal projection on X-axis’ is given by the matrix

The equations x + 2y + 2z = 1 and 2x + 4 y + 4z = 9 have

The number of all the possible matrices of order 2 × 2 with each entry 0, 1 or 2 is

A square matrix  A = [a_ij]_n×n is called an upper triangular if a_ij = 0 for

If A is any square matrix, then

The equations, x + 4 y – 2 z = 3, 3 x + y + 5 z = 7, 2 x + 3y +z = 5 have

If the system of equationsx + 4 ay + az = 0, x + 3by + bz = 0 andx + 2 cy +cz = 0 have a non-zero solution,then a, b, c are in