Matrices Dimensions

• 2x3

• 3x2

• 3x4

• 4x3

If A is a 2 × 3 matrix, and B is a 3 × 4 matrix, how many columns does AB have?

• 2

• 3

• 4

• AB is not defined

What is the dimension of this matrix?

• 2 x 3

• 3 x 2

• 6 x 1

• 1 x 6

• 2

• 7

• 4

• -3

What is a₂₃

• 14

• 4

• 1

• 3

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Which of the following products can NOT be made from these matrices ?

• AB

• BA

• BC

• BD

What do w, x, y and z equal in this matrix equation?

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

• 
• undefined/not possible

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• 
• No solution

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