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

Question # 1

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

Choose an answer

A is null matrix

A is unit matrix

A is triangular matrix

A is diagonal matrix

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Question # 2

If the matrices A & B have the orders 2×3 and 5×2 then order BA is:

Choose an answer

3×5

5×2

2×2

none

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Question # 3

The order of a matrix is shown by:

Choose an answer

number of columns + number of rows

number of rows × number of columns

number of columns - number of rows

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Question # 4

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

Choose an answer

-1

±1

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Question # 5

If A is a square matrix, then:

Choose an answer

|A^t| = A

|A^t| = -A

|A^t| = |A|

A^t= A

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Question # 6

Choose an answer

diagonal matrix

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Question # 7

Choose an answer

-5

-1

none

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Question # 8

If A is non singular matrix then A^t is:

Choose an answer

singular

nonsingular

symmetric

none

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Question # 9

Choose an answer

-2

-5

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Question # 10

Choose an answer

scalarmatrix

diagonalmatrix

lower triangularmatrix

uppertriangularmatrix

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Question # 11

If each element in any row or each element in any column of a square matrix is zero, then value of the determinant is:

Choose an answer

-1

none of these

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Question # 12

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

Choose an answer

|A|³

27|A|

3|A|

9|A|

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Question # 13

If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

Choose an answer

p×m

p×n

n×p

m×p

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