LCM and HCF Challenge

Find the LCM of 6 and 8.

• 24

• 12

• 30

• 18

Calculate the HCF of 12 and 18.

• 9

• 6

• 3

• 15

What is the LCM of 15 and 20?

• 45

• 100

• 75

• 60

Determine the HCF of 24 and 36.

• 18

• 12

• 30

• 6

Solve: If the LCM of two numbers is 36 and one number is 12, find the other number.

• 3

• 24

• 18

• 6

If the HCF of two numbers is 5 and one number is 25, what is the other number?

• 20

• 25

• 15

• 30

A factory produces products every 15 days and another factory produces products every 20 days. How often do they both produce products on the same day?

• 45 days

• 60 days

• 75 days

• 30 days

In a garden, roses bloom every 9 days and lilies bloom every 12 days. After how many days will both bloom on the same day again?

• 27

• 30

• 42

• 36