Question # 1

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scalar matrix

diagonalmatrix

triangularmatrix

none of these

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5

14

20

6

If each element of a 3 × 3 matrix A is multiplied by 3, then the determinant of the resulting matrix is:

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|A|³

27|A|

3|A|

9|A|

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ab - cd = 0

ac - bd = 0

ad - bc = 1

ad - bc = 0

The order of a matrix is shown by:

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number of columns + number of rows

number of rows × number of columns

number of columns - number of rows

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3

-3

1/3

-1/3

If two rows (or two columns) in a square matrix are identical (i.e. corresponding elements are equal), the value of the determinant is:

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0

1

-1

±1

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25

20

40

2a + 2b + 2c

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3×3

3×2

2×1

2×3

[0] is a:

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If a matrix A is symmetric as well as skew symmetric, then:

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A is null matrix

A is unit matrix

A is triangular matrix

A is diagonal matrix

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A matrix of order m×1 is called:

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row matrix

column matrix

identity matrix

scalar matrix

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11th Class FSC Mathematics Chapter 3 Test Online MCQs With Answers

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