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