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