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1. |
What are the prime factors of 120? |
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A. |
2, 60 |
B. |
2, 3, 5 |
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C. |
2, 2, 2, 3, 5 |
D. |
2, 2, 30 |
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Hint |
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2. |
Which of the following numbers is composite? |
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A. |
23 |
B. |
9 |
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C. |
31 |
D. |
1 |
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Hint |
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3. |
What are the prime factors of 400? |
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A. |
4, 10, 10 |
B. |
2, 200 |
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C. |
2, 5 |
D. |
2, 4, 5 |
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Hint |
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4. |
What are the prime factors of 810? |
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A. |
2, 3, 5 |
B. |
2, 5, 9 |
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C. |
3, 5 |
D. |
3, 4, 5 |
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Hint |
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5. |
Factor 20ef. |
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A. |
4 · 5 · e · f |
B. |
22 · e · f |
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C. |
2 · 2 · 5 · e · f |
D. |
2 · 10 · e · f |
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Hint |
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