1.	What are the dimensions of the matrix?
		A.	3 × 2	B.	6
		C.	4 × 2	D.	2 × 3
		Hint
	2.	Find .
		A.	impossible
		B.
		C.
		D.
		Hint
	3.	Find A – C.
		A.		B.
		C.	impossible	D.
		Hint
	4.	Find B – A.
		A.		B.
		C.	impossible	D.
		Hint
	5.	What is B – C?
		A.		B.
		C.		D.
		Hint