1.	0!=_____?
		A.		B.	0
		C.	undefined	D.	1
		Hint
	2.	Express the series 4 + 7 + 10 + 13 using sigma notation.
		A.		B.
		C.		D.
		Hint
	3.	Find the sum .
		A.	33	B.	93
		C.	108	D.	105
		Hint
	4.	Find the sum .
		A.	The sum does not exist.	B.	8
		C.	12	D.	0
		Hint
	5.	Write the series 9 + 12 + 15 + 18 + … + 57 in sigma notation.
		A.		B.
		C.		D.
		Hint