Alty
Nov 8, 2017, 04:53 PM
The greatest common factor (GCF or GCD or HCF) of a set of whole numbers is the largest positive integer that divides evenly into all numbers with zero remainder. For example, for the set of numbers 18, 30 and 42 the GCF = 6.
Does that help you solve the problem?
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ma0641
Nov 8, 2017, 08:09 PM
Didn't you actually post the answer? What number divides into those you posted?