#### Answer

$4$

#### Work Step by Step

The factors of 8 are $\{1,2,4,8\}$
The factors of 12 are $\{1,2,3,4,6,12\}$
The greatest common factor, therefore, is $4$.

Published by
Prentice Hall

ISBN 10:
0133500403

ISBN 13:
978-0-13350-040-0

$4$

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