Types and Order of Matrices

What is the order of a matrix with 3 rows and 5 columns?

• 3x3

• 3x2

• 5x3

• 3x5

A matrix with the same number of rows and columns is called:

• Square matrix

• Rectangular matrix

• Identity matrix

• Diagonal matrix

Which of the following is an example of a square matrix?

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An identity matrix has:

• All elements equal to 1

• All elements equal to 0

• Leading diagonal elements equal to 1 and rest equal to 0

• Leading diagonal elements equal to 0 and rest equal to 1

A matrix with only one column is called:

• Row matrix

• Column matrix

• Square matrix

• Diagonal matrix

Which of the following matrices is a diagonal matrix?

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The order of the resulting matrix when two matrices are added or subtracted is determined by:

• The number of rows in the first matrix

• The number of columns in the first matrix

• The order of both matrices should be the same

• The order of the resulting matrix is always 1x1

Which of the following is an example of a rectangular matrix?

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The number of elements in a 3 × 4 matrix is:

• 7

• 10

• 12

• 24

The order of a matrix is written as:

• Number of rows × Number of columns
  

• Number of rows - Number of columns

• Number of columns - Number of rows

• Number of rows + Number of columns