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