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Highest Common Factor (HCF)

Highest Common Factor (HCF)
Created by Quizmagic Team on Feb 14, 2014 12:37 PM.
In mathematics, the Highest Common Factor (HCF) is also known as the Greatest Common Divisor (GCD) or Greatest Common Factor (GCF). HCF or GCD of two or more positive integers is the largest integer that divides all the integers without leaving a remainder. It is the highest number that can divide the given two or more numbers. 

HCF of 20 and 30 is 10. 
Factors of 20 is 1, 2, 4, 5, 10, 20 and Factors of 30 is 1, 2, 3, 5, 6, 10, 15, 30. Among the factors 10 is the common highest factor. Therefore, 10 is the HCF of 20 and 30.

Try this quiz to find out how much you know about HCF.
Top 5 Scores
Anonymous
170
00:43
Anonymous
166
00:47
Anonymous
166
00:52
Anonymous
148
01:04
Anonymous
147
00:45
Questions
12
Minutes
8
High Score
170
00:43
Quiz Played
508
times
Last played on Nov 24, 2016View comments
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Sample Questions

Question 1
What is the Highest Common Factor (HCF) of 44 and 28?
4
11
7
2
Question 2
What is the Highest Common Factor (HCF) of 32 and 80?
4
8
12
16
Question 3
What is the Highest Common Factor (HCF) of 14 and 6?
4
2
3
1
Question 4
What is the Highest Common Factor (HCF) of 45 and 75?
5
3
15
9
Question 5
What is the Highest Common Factor (HCF) of 24 and 42?
6
3
4
12
Question 6
What is the Highest Common Factor (HCF) of 27 and 45?
6
3
13
9
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