Punjab 9th Class Math Model Paper 1 Mcqs Test Online

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Math

1. If

, then a is equal to:

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Question 2 of 30

2. A matrix having only one row is called:

Column matrix

Row matrix

Identity matrix

Square matrix

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3. Order of transpose of

is:

2-by-3

3-by-2

1-by-3

3-by-1

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4. Inverse of identity matrix is:

Scalar matrix

Diagonal matrix

Identity matrix

Null matrix

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Question 5 of 30

5. In matrices, (A + B)ᵗ = ?

BᵗAᵗ

AᵗBᵗ

Aᵗ+Bᵗ

Bᵗ+Aᵗ

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is called …………… matrix:

Diagonal

Unit

Zero

Scalar

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Question 7 of 30

7. (AB)⁻¹ = ……………………………

A⁻¹B⁻¹

B⁻¹A⁻¹

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Question 8 of 30

8. Ad joint of

is:

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Question 9 of 30

9. The Order of Matrix [2 1] is:

2-by-2

1-by-1

2-by-1

1-by-2

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Question 10 of 30

10. Negative of matrix

is:

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Question 11 of 30

11. Ad joint oI

is:

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12. If the number of rows of a matrix is not equal to the number of columns, then the matrix is called:

Diagonal matrix

Square matrix

Rectangular matrix

Scalar matrix

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Question 13 of 30

13. Matrix $Math 1.2.3$ is called:

Identity Matrix

Singular matrix

Scalar matrix

Null matrix

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Question 14 of 30

14. Addition of two matrices

is:

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Question 15 of 30

15. A matrix is skew-symmetric if:

(Aᵗ)ᵗ = A

(Aᵗ)ᵗ = – A

Aᵗ = A

Aᵗ = – A

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Question 16 of 30

16. Order of Matrix

is:

1-by-3

3-by-3

3-by-1

2-by-3

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17. If $Math 1.2.8$ = 3, then x is equal to:

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18.

is called ………….. matrix:

Scalar

Unit

Singular

Zero

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19. Inverse of matrix A is equal to:

AdjA/Aᵗ

|A|/AdjA

AdjA/|A|

Aᵗ/AdjA

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Question 20 of 30

20. In matrix multiplication, in general, AB ………………. BA.

‖

≠

∏

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21. Product of

is:

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22. Matrix A + B can be found, if order of A and B is:

Zero

Not equal

Equal

– 1

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23. If

= 0, then x is equal to:

– 6

– 9

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Question 24 of 30

24. (AB)ᵗ = ………………………..

BᵗAᵗ

AᵗBᵗ

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Question 25 of 30

25. Product of [x y]

is :

[x + 2y]

[2x + y]

[2x – y]

[x – 2y]

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Question 26 of 30

26. Which is order of a square matrix?

2-by-2

1-by-2

2-by-1

3-by-2

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Question 27 of 30

27. Order of transpose of matrix

is:

1-by-3

2-by-3

3-by-2

3-by-3

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Question 28 of 30

28. If the determinant of a square matrix is equal to zero, then it is called:

Singular matrix

Diagonal matrix

Identity matrix

Non-singular matrix

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Question 29 of 30

29. If x +

, then x is equal to:

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Question 30 of 30

30. Order of identity (unit) matrix is always equal to:

Square matrix

Null matrix

Rectangular matrix

Row matrix

Question 30 of 30

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Test By Topics	9th Class Math

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