1.	Evaluate C(5, 3).
		A.	40	B.	10
		C.	30	D.	20
		Hint
	2.	Find C(10, 3).
		A.	120	B.	34
		C.	144	D.	80
		Hint
	3.	Multiply C(12, 5)× C(15, 10).
		A.	180	B.	2,378,376
		C.	792	D.	3003
		Hint
	4.	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
	5.	How many lines are determined by 7 points, no three of which are collinear?
		A.	42	B.	21
		C.	105	D.	200
		Hint