Prime and Composite Odd Even

The smallest prime number is:

• 0

• 1

• 2

• 3

Which of these is NOT a prime number?

• 11

• 15

• 19

• 13

How many factors does a prime number have?

• 1

• 2

• 3

• More than 2

Which of the following numbers is prime?

• 21

• 33

• 17

• 50

Which of these numbers is NOT a composite number?

• 4

• 9

• 5

• 15

Which of these numbers is composite?

• 7

• 19

• 10

• 3

How many factors does a composite number have?

• 2

• Only 1

• More than 2

• None

Which of these numbers is both odd and prime?

• 2

• 9

• 13

• 22

If you add two even numbers, the result will always be:

• Odd

• Even

• Prime

• Composite

Which of these is true?

• All odd numbers are prime.

• All even numbers are composite.

• 2 is the only even prime number.

• 1 is a composite number.