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The highest common factor, or HCF, is the largest positive integer that will divide evenly with no remainder into all the members of a given set of numbers. Natural numbers are the same as counting numbers.
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the HCF
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Earn +20 ptsQ: What is the HCF of two natural numbers?
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