Question
Find the HCF of 20 and 56.
- 4
- 2
- 20
- 14
Hint:
The Highest Common Factor (HCF) of two numbers is the highest possible number that divides both the numbers completely.
The correct answer is: 4
For 20,
Factors of 20 are 1,2,4,5,10,20
For 56,
Factors of 56 are 1,2,4,7,8,14,28,56
Hence, the highest common factor of 20 and 56 is 4.
The Highest Common Factor (HCF) is also called the Greatest Common Divisor (GCD).
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