1.	Which product is not defined?
		A.
		B.
		C.	[16 12 5]
		D.	[11 4 -3]
		Hint
	2.	Find the dimensions of A6 × 3 · B3 × 1.
		A.	6 × 3	B.	3 × 3
		C.	6 × 1	D.	3 × 1
		Hint
	3.	Find
		A.		B.
		C.		D.
		Hint
	4.	Given that and use the fact that to find AB + AC.
		A.		B.
		C.		D.
		Hint
	5.	Which of the following properties does not hold for matrices?
		A.	right distributive property
		B.	left distributive property
		C.	commutative property of multiplication
		D.	associative property of multiplication
		Hint