HCF and LCM Application

Find the factors of 24.

• 10

• 15

• 5

• 1, 2, 3, 4, 6, 8, 12, 24

Calculate the HCF of 36 and 48.

• 6

• 18

• 24

• 12

What is the LCM of 15 and 20?

• 60

• 75

• 100

• 45

Solve: A garden has plants that need watering every 12 days and others that need watering every 18 days. How often should the gardener water all the plants together?

• 36 days

• 42 days

• 30 days

• 24 days

A factory produces batches of products every 24 hours and another batch every 36 hours. How often do they produce a batch together?

• 48 hours

• 72 hours

• 30 hours

• 60 hours

Identify the factors of 42.

• 1, 2, 3, 6, 8, 14, 21, 42

• 1, 2, 3, 6, 7, 14, 21, 42

• 1, 2, 3, 5, 6, 7, 14, 21, 42

• 1, 2, 4, 7, 14, 21, 42

Determine the HCF of 56 and 72.

• 20

• 8

• 16

• 12

If a bus arrives every 15 minutes and another bus arrives every 20 minutes, how often do they both arrive at the same time?

• Every 10 minutes

• Every 30 minutes

• Every 60 minutes

• Every 45 minutes

What is the LCM of 8 and 12?

• 24

• 16

• 30

• 20

In a school, students have exams every 10 days and quizzes every 15 days. How often do they have both exams and quizzes on the same day?

• Every 20 days

• Every 25 days

• Every 30 days

• Every 35 days