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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? |
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A. |
8395 |
B. |
110 |
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C. |
5670 |
D. |
6160 |
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Hint |
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2. |
Find 12P4. |
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A. |
95,040 |
B. |
42 |
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C. |
11,880 |
D. |
19,958,400 |
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Hint |
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3. |
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? |
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A. |
 |
B. |
 |
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C. |
 |
D. |
 |
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Hint |
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4. |
How many different two-person teams can be made from 6 people? |
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A. |
360 |
B. |
15 |
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C. |
30 |
D. |
120 |
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Hint |
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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? |
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A. |
133,133 |
B. |
3,003 |
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C. |
360,360 |
D. |
36,036 |
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Hint |
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