The GCF is 4.
The GCF is 1.
5
2 x 2
The factors of 17 are 1 and 17 The factors of 20 are 1, 2, 4, 5, 10, and 20 The greatest common factor of 17 and 20 is 1
The Greatest Common Factor of 16, 20, 30: 2
The greatest common factor for 16 and 20 is 4.
The common factor of 15, 16, and 20 is just 1
The greatest common factor (GCF) is 4.
Since 4 is a factor of 20, it is automatically the GCF.
4
4
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