Number Theory quizzes

6 quizzes of 10 number theory questions (maths), 68 questions in all and more added as the bank grows. 30 seconds a question. Open a quiz to see what is in it; log in to play, see the right answers and keep your score.

Play quiz 1

All Number Theory quizzes

Number Theory practice questions with answers

Five from this category, new every day.

  1. Question 1

    What is the LCM of 12, 15, and 18?

    • A.160
    • B.200
    • C.210
    • D.180
    Show answer

    D. 180

  2. Question 2

    What is the least common multiple (LCM) of 12 and 18?

    • A.48
    • B.54
    • C.24
    • D.36
    Show answer

    D. 36

  3. Question 3

    Which is the smallest prime number?

    • A.1
    • B.0
    • C.2
    • D.3
    Show answer

    C. 2

  4. Question 4

    HCF of 24 and 36 is?

    • A.8
    • B.6
    • C.12
    • D.18
    Show answer

    C. 12

  5. Question 5

    Find the LCM of 12 and 18.

    • A.54
    • B.48
    • C.24
    • D.36
    Show answer

    D. 36

More maths quizzes