Prime and Composite Numbers

Which number below is NOT prime?

• 3

• 7

• 9

• 11

The number 27 is both ...

• even and composite

• odd and composite

• even and prime

• odd and prime

Select the answer choice with only PRIME numbers.

• 2, 8, 9, 10, 22, 54

• 1, 3, 5, 7, 11

• 2, 3, 5, 7, 11, 13, 17

• 4, 6, 8, 9, 10, 12

Which of the following answer choices contains only COMPOSITE numbers?

• 4, 55, 8, 11

• 90, 48, 21, 40, 15

• 35, 27, 70, 83

• 70, 71, 71, 73, 74

1 is neither prime nor composite

• True

• False

The number 25 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 2 factors

• exactly 2 factors

Which of the following numbers is a composite number?

• 2

• 3

• 5

• 9

Is the number 51 prime or composite?

• Prime

• Composite

True/False The number 1 is neither prime nor composite.

• True

• False

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair