HCF, LCM, FACTORS, MULTIPLES

What is the HCF of 24 and 36?

• 6

• 18

• 24

• 12

Find the LCM of 4 and 5.

• 15

• 12

• 20

• 25

Is 13 a prime number?

• It depends on the context

• Only if it's even

• Yes

• No

List all factors of 30.

• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

• 1, 2, 3, 5, 10, 20, 30, 40

• 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

• [1, 2, 3, 5, 6, 10, 15, 30]

Determine the first five multiples of 7.

• 5, 10, 15, 20, 25

• 7, 15, 22, 29, 36

• [7, 14, 21, 28, 35]

• 6, 12, 18, 24, 30

Are 8 and 15 coprime?

• Only if they are both even

• They have a common factor of 1

• Yes

• No

What is the HCF of 48 and 60?

• 6

• 24

• 30

• 12

Find the LCM of 6 and 8.

• 12

• 18

• 24

• 30

Is 19 a prime number?

• No

• Yes

• 19 is an even number

• 19 is a composite number

List all factors of 42.

• [2, 3, 5, 7, 10, 14, 21, 42]

• [1, 2, 3, 6, 7, 14, 21, 42]

• [1, 2, 3, 5, 7, 11, 42]

• [1, 2, 4, 6, 7, 14, 21]