## Answer

###### Wiki User

###### 03/29/2013

The greatest common factor, or GCF, is the largest integer that
will divide evenly with no remainder into all the members of a
given set of 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 GCF

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