HIGHEST COMMON FACTOR ( HCF )

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  • Oxford dictionary definition: The highest number that can be divided exactly into each of two numbers.
  • Cambridge dictionary definition: The highest number that a set of two numbers can be divided by exactly.
  • 4 is the highest common factor of 8 and 12 because 4 can divide 8 as well as 12 and it the largest number that can divide both 8 and 12.
  • 2 and 1 can also divide both 8 and 12 but 4 is bigger than 2 and 1, hence 4 is the hcf of 8 and 12. There is no other number which could divide both 8 and 12.


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