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Multiples and Primes
Contributed by: Zielinski
  • 1. Which of the following are multiples of 3
A) 6,15,21,29
B) 6,12,18,36
C) 9,12,16,18
D) 15,33,19,24
  • 2. Which of the following are multiples of 6
A) 18,56,66,60
B) 48,24,54,26
C) 18,30,42,72,
D) 63,24,36,12
  • 3. Which of the following are multiples of both 4 and 3
A) 7,24,18,32
B) 12,40,36,28
C) 12,36,24,48
D) 16,36,24,42
  • 4. Which of the following are multiples of both 5 and 3
A) 16,45,30,90
B) 15,30,60,45
C) 25,33,15,60
D) 45,60,10,35
  • 5. Prime or Composite? 23
A) Composite
B) Prime
C) Neither
  • 6. Prime or Composite? 9
A) Prime
B) Neither
C) Composite
  • 7. Prime or Composite? 2
A) Neither
B) Composite
C) Prime
  • 8. Prime or Composite? 1
A) Prime
B) Neither
C) Composite
  • 9. Which of the following are all composite?
A) 18,37,56,91
B) 81,53,21,72
C) 15,63,54,63
D) 29,27,55,42
  • 10. Which of the following are all primes?
A) 39,49,69,29
B) 27,73,81,47
C) 51,56,65,71
D) 91,29,89,37
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