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1. |
A history teacher has a stack of four different books. How many ways can these books be stacked? |
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A. |
24 |
B. |
48 |
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C. |
4 |
D. |
12 |
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Hint |
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2. |
How many 3-digit whole numbers can you write using the digits 1, 3, 5, and 7 if no digit can be used twice? |
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A. |
64 |
B. |
24 |
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C. |
4 |
D. |
12 |
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Hint |
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3. |
A race consists of ten runners. How many ways can the runners finish first, second, and third? |
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A. |
30 |
B. |
720 |
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C. |
504 |
D. |
1,000 |
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Hint |
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4. |
Consider all of the five-digit numbers that can be formed using the digits 1, 2, 3, 4, and 5 where no digit is used twice. Find the probability that one of these numbers picked at random is between 10,000 and 20,000. |
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A. |
25% |
B. |
33 % |
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C. |
20% |
D. |
16 % |
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Hint |
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5. |
Consider all of the six-digit numbers that can be formed using the digits 1, 2, 3, 4, 5, and 6 where no digit is used twice. Find the probability that one of these numbers picked at random is between 100,000 and 300,000. |
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A. |
16% |
B. |
40% |
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C. |
33% |
D. |
24% |
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Hint |
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