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What topicPrime numbers, multiples and factors
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Number of questions20
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Mathematics Quiz: Prime Numbers, Multiples, and Factors

Welcome to the Mathematics quiz focusing on prime numbers, multiples, and factors. Each question has ten possible answers, but only one is correct. Good luck!

Questions

  1. What is the smallest prime number?

    • A. 0
    • B. 1
    • C. 2
    • D. 3
    • E. 4
    • F. 5
    • G. 6
    • H. 7
    • I. 8
    • J. 9

  2. Which of the following numbers is a prime number?

    • A. 10
    • B. 12
    • C. 15
    • D. 17
    • E. 18
    • F. 20
    • G. 21
    • H. 22
    • I. 24
    • J. 25

  3. How many prime numbers are there between 10 and 30?

    • A. 5
    • B. 6
    • C. 7
    • D. 8
    • E. 9
    • F. 10
    • G. 11
    • H. 12
    • I. 13
    • J. 14

  4. What is the greatest common factor (GCF) of 18 and 24?

    • A. 6
    • B. 4
    • C. 2
    • D. 12
    • E. 3
    • F. 9
    • G. 1
    • H. 18
    • I. 24
    • J. 36

  5. Which of the following is NOT a prime number?

    • A. 29
    • B. 31
    • C. 37
    • D. 39
    • E. 41
    • F. 43
    • G. 47
    • H. 53
    • I. 59
    • J. 61

  6. A number is a multiple of 6. Which of the following is a possible factor of that number?

    • A. 2
    • B. 5
    • C. 7
    • D. 11
    • E. 13
    • F. 15
    • G. 17
    • H. 19
    • I. 23
    • J. 30

  7. What is the least common multiple (LCM) of 4 and 5?

    • A. 10
    • B. 20
    • C. 30
    • D. 40
    • E. 50
    • F. 60
    • G. 70
    • H. 80
    • I. 90
    • J. 100

  8. Which of the following numbers has the most factors?

    • A. 12
    • B. 15
    • C. 18
    • D. 20
    • E. 24
    • F. 30
    • G. 36
    • H. 40
    • I. 42
    • J. 48

  9. How many prime factors are there in the number 60?

    • A. 2
    • B. 3
    • C. 4
    • D. 5
    • E. 6
    • F. 7
    • G. 8
    • H. 9
    • I. 10
    • J. 11

  10. What is 21 divided by its greatest prime factor?

    • A. 2
    • B. 3
    • C. 4
    • D. 5
    • E. 6
    • F. 7
    • G. 8
    • H. 9
    • I. 10
    • J. 11

  11. Which of the following is a prime factorization of 28?

    • A. 2 x 14
    • B. 4 x 7
    • C. 2 x 2 x 7
    • D. 1 x 28
    • E. 4 x 2 x 3
    • F. 7 x 3
    • G. 2 x 2 x 2 x 3
    • H. 3 x 9
    • I. 14 x 2
    • J. 28 x 1

  12. What is the largest prime number less than 100?

    • A. 89
    • B. 91
    • C. 93
    • D. 97
    • E. 89
    • F. 83
    • G. 79
    • H. 73
    • I. 71
    • J. 67

  13. How many multiples of 7 are there between 1 and 100?

    • A. 14
    • B. 13
    • C. 15
    • D. 16
    • E. 17
    • F. 18
    • G. 19
    • H. 20
    • I. 21
    • J. 22

  14. What is the prime factorization of 90?

    • A. 2 x 3 x 15
    • B. 3 x 5 x 6
    • C. 2 x 3 x 3 x 5
    • D. 2 x 45
    • E. 3 x 30
    • F. 5 x 18
    • G. 1 x 90
    • H. 9 x 10
    • I. 18 x 5
    • J. 10 x 9

  15. Which of the following numbers is a composite number?

    • A. 11
    • B. 17
    • C. 23
    • D. 25
    • E. 29
    • F. 3
    • G. 5
    • H. 7
    • I. 2
    • J. 13

  16. If a number has exactly two factors, what type of number is it?

    • A. Composite
    • B. Even
    • C. Odd
    • D. Prime
    • E. Perfect
    • F. Triangular
    • G. Square
    • H. Cube
    • I. Fraction
    • J. Integer

  17. What is the common multiple of 3 and 4?

    • A. 10
    • B. 11
    • C. 12
    • D. 13
    • E. 14
    • F. 15
    • G. 16
    • H. 17
    • I. 18
    • J. 19

  18. What do we call a number that can only be divided by 1 and itself?

    • A. Composite
    • B. Factor
    • C. Prime
    • D. Even
    • E. Odd
    • F. Perfect
    • G. Whole
    • H. Rational
    • I. Integers
    • J. Natural

  19. Which of the following is a prime number greater than 50?

    • A. 51
    • B. 53
    • C. 54
    • D. 55
    • E. 56
    • F. 57
    • G. 58
    • H. 59
    • I. 60
    • J. 61

  20. If the prime factorization of a number is 2² x 3 x 5, what is the number?

    • A. 60
    • B. 30
    • C. 50
    • D. 12
    • E. 20
    • F. 72
    • G. 90
    • H. 40
    • I. 45
    • J. 36

Answer Key

  1. C
  2. D
  3. B
  4. A
  5. D
  6. A
  7. B
  8. E
  9. B
  10. B
  11. C
  12. D
  13. A
  14. C
  15. D
  16. D
  17. C
  18. C
  19. B
  20. A

Feel free to use this quiz to test your knowledge on prime numbers, multiples, and factors!