1.	The calculus class is preparing for the Advanced Placement Exam. If there are 12 girls in a class of 20, how many study groups of 3 girls and 2 boys can be formed?
		A.	8395	B.	110
		C.	5670	D.	6160
		Hint
	2.	Find 12P4.
		A.	42	B.	95,040
		C.	19,958,400	D.	11,880
		Hint
	3.	Find 8P3.
		A.	336	B.	1,680
		C.	21	D.	24
		Hint
	4.	A briefcase combination lock contains 4 digits. Each digit is a number between 0 and 9. How many different combinations are possible if each number can only be used once?
		A.	10,000	B.	40
		C.	5,040	D.	7,200
		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