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