1.	Evaluate C(5, 3).
		A.	20	B.	10
		C.	30	D.	40
		Hint
	2.	Find C(10, 3).
		A.	144	B.	34
		C.	80	D.	120
		Hint
	3.	Multiply C(12, 5)× C(15, 10).
		A.	792	B.	2,378,376
		C.	3003	D.	180
		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.	110	B.	6160
		C.	5670	D.	8395
		Hint
	5.	How many lines are determined by 7 points, no three of which are collinear?
		A.	21	B.	200
		C.	42	D.	105
		Hint