1.	How many lines are determined by 7 points, no three of which are collinear?
		A.	105	B.	200
		C.	21	D.	42
		Hint
	2.	Find 12P4.
		A.	42	B.	95,040
		C.	19,958,400	D.	11,880
		Hint
	3.	Find 8P3.
		A.	1,680	B.	24
		C.	21	D.	336
		Hint
	4.	A composition teacher needs to choose 10 students out of 15 to serve as rough draft reviewers. A group of 10 seniors, 3 juniors, and 2 sophomores have volunteered. How many different ways can the teacher choose 10 students?
		A.	133,133	B.	36,036
		C.	3,003	D.	360,360
		Hint
	5.	A composition teacher needs to choose 10 students out of 15 to serve as rough draft reviewers. A group of 10 seniors, 3 juniors, and 2 sophomores have volunteered. If the students are chosen randomly, what is the probability that 6 seniors, 2 juniors, and 2 sophomores will be selected?
		A.		B.
		C.		D.
		Hint