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