📝 Prime Numbers Quiz 🧠

Check your understanding of prime and non-prime numbers.

Questions:

Q212101

Which of these numbers is a prime number?

4

9

7

6

Q212102

Why is 1 not a prime number?

It is too small

It can be divided by 2

It has only one factor

It is an odd number

Q212103

Which number below is NOT a prime number?

17

11

15

13

Q212104

Which is the smallest prime number?

3

2

1

5

Q212105

How many factors does a prime number have?

More than 3

3

1

2

Q212106

Which of these numbers is a composite number?

23

17

21

13

Q212107

Which number below is prime?

27

25

29

35

Q212108

Why is 9 NOT a prime number?

It is too big

It is odd

It ends in 9

It has more than two factors

Q212109

Which of these numbers has exactly two factors?

20

19

16

18

Q212110

Which pair of numbers are BOTH prime?

21 and 23

17 and 19

15 and 19

14 and 17

Q212111

Which number is prime?

51

59

57

63

Q212112

A number has factors 1, 2, and 11. What type of number is it?

Even

Prime

Odd

Composite