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) 8
C) 4
D) 9
- 3. Which is a prime factor of the composite number 36?
A) 3
B) 13
C) 9
D) 23
- 4. Which is a prime factor of the composite number 45?
A) 15
B) 5
C) 2
D) 9
- 5. Which is a prime factor of the composite number 20?
A) 10
B) 5
C) 4
D) 3
- 6. Which is a prime factor of the composite number 39?
A) 9
B) 11
C) 13
D) 6
- 7. Which is a prime factor of the composite number 254?
A) 127
B) 117
C) 133
D) 103
- 8. Which is a prime factor of the composite number 291?
A) 87
B) 97
C) 117
D) 73
- 9. Which is a prime factor of the composite number 66?
A) 11
B) 6
C) 7
D) 5
- 10. Which is a prime factor of the composite number 78?
A) 34
B) 37
C) 13
D) 39
- 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) 9
B) 39
C) 29
D) 19
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