Prime and Composite (5.5 c)
- 1. Which is a prime factor of the composite number 16?
A) 4 B) 8 C) 2 D) 3
- 2. Which is a prime factor of the composite number 24?
A) 4 B) 8 C) 3 D) 9
- 3. Which is a prime factor of the composite number 36?
A) 9 B) 3 C) 13 D) 23
- 4. Which is a prime factor of the composite number 45?
A) 2 B) 9 C) 15 D) 5
- 5. Which is a prime factor of the composite number 20?
A) 10 B) 3 C) 5 D) 4
- 6. Which is a prime factor of the composite number 39?
A) 13 B) 9 C) 6 D) 11
- 7. Which is a prime factor of the composite number 254?
A) 117 B) 133 C) 103 D) 127
- 8. Which is a prime factor of the composite number 291?
A) 87 B) 97 C) 117 D) 73
- 9. Which is a prime factor of the composite number 66?
A) 11 B) 7 C) 6 D) 5
- 10. Which is a prime factor of the composite number 78?
A) 39 B) 37 C) 13 D) 34
- 11. Which is a prime factor of the composite number 147?
A) 49 B) 5 C) 9 D) 7
- 12. Which is a prime factor of the composite number 57?
A) 9 B) 19 C) 39 D) 29
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