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20 questions

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- Multiple ChoicePlease save your changes before editing any questions.
40

50

42

15

- Multiple ChoicePlease save your changes before editing any questions.
2

15/2

5/2

3/2

- Multiple ChoicePlease save your changes before editing any questions.
For any unit matrix I

I

^{2}= I| I | = 0

| I | = 2

| I | = 3

- Multiple ChoicePlease save your changes before editing any questions.
a

_{ij}=0a

_{ij}=1a

_{ij}=a_{ji}a

_{ij}=a_{ij} - Multiple ChoicePlease save your changes before editing any questions.
27A

3A

2A

A

- Multiple ChoicePlease save your changes before editing any questions.
A and B are square matrix then, $\left(AB\right)^T$

$A^TB^T$

$B^TA^T$

$AB^T$

$A^TB^{ }$

- Multiple ChoicePlease save your changes before editing any questions.
- Multiple ChoicePlease save your changes before editing any questions.
$\pm6$

6

-5

7

- Multiple ChoicePlease save your changes before editing any questions.
3

8

24

0

- Multiple ChoicePlease save your changes before editing any questions.
Let A be a non-singular matrix of the order 2 × 2 then $\left|A^{-1}\right|=$

$\left|A^{ }\right|$

$\frac{1}{\left|A^{ }\right|}$

0

1

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1

-1

4

Can not determine

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$\lambda=2$

$\lambda\ne2$

$\lambda\ne-2$

none of these

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$\pm2$

$\pm5$

$\pm3$

0

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$A^2-A\ +I=O$ $then\ A^{-1}is$

A

A-I

A+I

I-A

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2 |A|

8|A|

4 |A|

Non of these

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a symmetric matrix

a diagonal matrix

a skew symmetric matrix

None of these

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If a matrix is both symmetric matrix and skew symmetric matrix then

A is a diagonal matrix

A is zero matrix

A is scalar matrix

None of these

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Total number of possible matrices of order 3 × 3 with each entry 2 or 0 is

9

27

512

256

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If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix (5A – 2B) is

m × 3

m × 3

m × n

3 × n

- Multiple ChoicePlease save your changes before editing any questions.
2

3

4

5