a_ij=0

a_ij=1

a_ij=a_ji

a_ij=a_ij

 $A^TB^T$  

 $B^TA^T$  

 $AB^T$  

 $A^TB^{ }$  

$\pm6$

6

-5

7

3

8

24

0

 $\left|A^{ }\right|$  

 $\frac{1}{\left|A^{ }\right|}$  

0

1

1

-1

4

Can not determine

$\lambda=2$

$\lambda\ne2$

$\lambda\ne-2$

none of these

$\pm2$

$\pm5$

$\pm3$

0

A

A-I

A+I

I-A

2 |A|

8|A|

4 |A|

Non of these

a symmetric matrix

a diagonal matrix

a skew symmetric matrix

None of these

A is a diagonal matrix

A is zero matrix

A is scalar matrix

None of these

9

27

512

256

m × 3

m × 3

m × n

3 × n

2

3

4

5