LCM and HCF Challenge

What is the LCM of 4 and 6?

• 14

• 8

• 12

• 10

Find the HCF of 12 and 16.

• 6

• 8

• 4

• 2

List the prime factors of 30.

• 2, 4, 6, 8

• [2, 3, 5]

• 3, 5, 7, 11

• 1, 2, 3, 5

What is the LCM of 8 and 12?

• 16

• 24

• 20

• 30

Calculate the HCF of 18 and 24.

• 6

• 12

• 4

• 8

Identify the prime factors of 42.

• 6, 7, 12

• 3, 14, 42

• 1, 2, 21

• [2, 3, 7]

If the LCM of two numbers is 36 and one number is 9, what is the other number?

• 18

• 6

• 12

• 4

Find the HCF of 20, 30, and 50.

• 5

• 10

• 25

• 15

What is the LCM of 5, 10, and 15?

• 25

• 15

• 35

• 30

List the prime factors of 56.

• 2, 7

• 8, 14

• 5, 11

• 3, 4