1.	A history teacher has a stack of four different books. How many ways can these books be stacked?
		A.	48	B.	12
		C.	4	D.	24
		Hint
	2.	Find the value of P(9, 3).
		A.	3,024	B.	84
		C.	504	D.	729
		Hint
	3.	There are 8 floats in a parade. If the float carrying the grand marshal must be first, how many ways can the parade organizer pick the next two floats in the parade?
		A.	56	B.	28
		C.	21	D.	42
		Hint
	4.	There are 9 players on a softball team. How many ways can the coach pick the first 2 batters?
		A.	81	B.	84
		C.	36	D.	72
		Hint
	5.	There are 9 players on a softball team. How many ways can the coach pick the first 5 batters?
		A.	3,024	B.	45
		C.	15,120	D.	60,480
		Hint