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