The multiples of 8 are ....

• 1, 2, 4, 8

• 8, 16, 24, 32, ...

• 1, 2, 4, 8, 16, 24

• 4, 8, 12, 16, ...

The following are the multiples of 15, EXCEPT ....

• 75

• 70

• 60

• 30

The first five multiples of 6 are ....

• 6, 12, 18, 24, 30

• 6, 12, 16, 18, 24

• 3, 6, 9, 12, 15

• 6, 16, 26, 36, 46

The multiples of 5 between 11 and 31 are ....

• 5, 10, 15, 20, 15, ...

• 15, 20, 25, 30

• 5, 10, 35, 40, 45, ...

• 20 and 30

The common multiples of 5 and 10 is ....

• 5

• 6

• 9

• 10

The factors of 12 are ....

• 12, 24, 36, 48, ...

• 1, 2, 3, 4, 6, 12

• 1, 2, 3, 4, 5, 6, ...

• only 1 and 12

These are the factors of 15, EXCEPT ....

• 3

• 5

• 15

• 30

The factors of 18 are ....

• 1, 2, 3, 4, 6, 8, 9, 18

• 1, 2, 3, 6, 9, 18

• 1, 9, 18, 27, 36

• 1, 2, 18, 36

Which of the following is NOT the factor of 20?

• 2

• 5

• 20

• 40

The common factor of 6 and 9 is ....

• 2

• 3

• 4

• 6