Find the highest common factor (HCF) of 84, 126, and 210.
Correct answer(s):
- 42
Topic
Factors And Multiples
Practice related MCQ quizzes and improve step by step.
Practice by Education Level
Quizzes in Factors And Multiples for Grade 8
Which of the following pairs of integers are co-prime (share no common factors greater than 1)? Select all that apply.
Correct answer(s):
- 14 and 25
- 8 and 15
Select all numbers from the list that are factors of 360.
Correct answer(s):
- 12
- 15
- 18
- 20
How many positive divisors does the number 360 have?
Correct answer(s):
- 24
Calculate the greatest common divisor (GCD) of 84 and 126.
Correct answer(s):
- 42
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36
Select all pairs of positive integers that have HCF 6 and LCM 180
Correct answer(s):
- 12 and 90
- 18 and 60
- 30 and 36
Find the highest common factor (HCF/GCF) of 84 and 126.
Correct answer(s):
- 42
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36
How many positive divisors does 360 have, including 1 and 360?
Correct answer(s):
- 24
How many positive divisors (factors) does 360 have?
Correct answer(s):
- 24
Calculate the greatest common divisor (GCD) of 84 and 126.
Correct answer(s):
- 42
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36
Find the least common multiple (LCM) of 12 and 18.
Correct answer(s):
- 36