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