
	1.	Which product is not defined?
		A.
		B.
		C.	[16 12 5]
		D.	[11 4 -3]
		Hint

	2.	Find the dimensions of A_{6 × 3} · B_{3 × 1}.
		A.	6 × 3	B.	3 × 3
		C.	3 × 1	D.	6 × 1
		Hint

	3.	Find
		A.		B.
		C.		D.
		Hint

	4.	State whether the product of A_{3 × 4} and B_{3 × 4} is defined, and if it is defined, state the dimensions.
		A.	undefined	B.	defined, 9 × 16
		C.	defined, 3 × 4	D.	defined, 4 × 3
		Hint

	5.	Find the product of
		A.
		B.
		C.
		D.
		Hint