The GCF is 1.
The GCF is 28.
The GCF is 3.
The GCF is: 1
1, 2, 4, 7, 8, 14, 28, 56 1, 3, 9, 27, 81 The GCF is 1.
The GCF is 27.
The GCF is 28.
Since 28 is divisible by both 2 and 7, the LCM is 28.
The GCF is 27.
The GCF of 10 and 28 is 210 factors to [2 * 5]27 factors to [2 * 2 * 7]The common factor is 2, so the GCF is 2.There is none
The GCF is 27.
The GCF of 27 and 81 is 27. And their LCM is 81.