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.
5670
B.
6160
C.
8395
D.
110
Hint
2.
Find
12
P
4
.
A.
11,880
B.
95,040
C.
19,958,400
D.
42
Hint
3.
Find
8
P
3
.
A.
21
B.
1,680
C.
24
D.
336
Hint
4.
A briefcase combination lock contains 4 digits. Each digit is a number between 0 and 9. If each number can only be used once, what is the probability that all four digits are odd?
A.
B.
C.
D.
Hint
5.
How many different two-person teams can be made from 6 people?
A.
120
B.
360
C.
15
D.
30
Hint