Quiz on Multiples and Factors (Mathematics)

1. What is a number which has only two com- mon factors, 1 and the number itself, called?

2. What is a number which has more than two common factors called?

3. Which number is neither prime nor composite?

4. What are numbers which have only 1 as a common factor called?

5. Which is the only even number that is a prime number?

6. What are the common factors of 12 and 18?

7. What are prime numbers with a difference of two are called?

8. How many pairs of twin prime numbers are between 1 and 100?

9. Who discovered a method to find prime numbers?

10. Who proved that the number of prime numbers is infinite?