basic matrices

The number of columns in a 4 x 2 matrix is?

• 2

• 4

• 6

• 8

The number of rows in a 4 x 8 matrix is?

• 4

• 8

• 12

• 32

If a matrix has equal number of rows and columns, then it is said to be

• row matrix

• identical matrix

• square matrix

• rectangular matrix

Match each matrix to its correct dimension.

• 2 x 4

• 
• 4 x 2

• 
• 3 x 1

• 
• 1 x 3

• 
• 2 x 3

• 

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

What are the dimensions of this matrix?

• 3x1
• 1x3
• 3x3
• 1x1

Element a32 is belongs to which row and column in a given matrix A.

• 2nd row, 3rd column

• 3rd row , 2nd column

• can’t decide

• None of the above

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

Element A₂₃ is

• -4

• 3

• 5

• -2