| |
| |
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. |
6160 |
B. |
5670 |
| |
|
C. |
110 |
D. |
8395 |
| |
|
Hint |
|
| |
2. |
Find 8P3. |
| |
|
A. |
336 |
B. |
1,680 |
| |
|
C. |
21 |
D. |
24 |
| |
|
Hint |
|
| |
3. |
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. |
5,040 |
| |
|
C. |
7,200 |
D. |
40 |
| |
|
Hint |
|
| |
4. |
How many different two-person teams can be made from 6 people? |
| |
|
A. |
15 |
B. |
360 |
| |
|
C. |
120 |
D. |
30 |
| |
|
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. How many different ways can the teacher choose 10 students? |
| |
|
A. |
133,133 |
B. |
36,036 |
| |
|
C. |
3,003 |
D. |
360,360 |
| |
|
Hint |
|
|
|