1.	To what set of numbers does belong?
		A.	rationals	B.	integers
		C.	whole numbers	D.	irrationals
		Hint
	2.	Simplify .
		A.		B.
		C.		D.
		Hint
	3.	Simplify
		A.	72	B.
		C.		D.
		Hint
	4.	Simplify .
		A.	16	B.
		C.	4	D.
		Hint
	5.	Find
		A.		B.
		C.		D.
		Hint