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| 12: | 2 | 2 | 3 | |
| 30: | 2 | 3 | 5 | |
| GCF: | 2 | 3 |
The Greates Common Factor (GCF) is: 2 x 3 = 6
| Greatest Common Factor (GCF) of 14 and 13 | | Greatest Common Factor (GCF) of 16 and 20 | | Greatest Common Factor (GCF) of 6 and 11 | | Greatest Common Factor (GCF) of 48 and 125 | | Greatest Common Factor (GCF) of 123456789 and 987654321 | | Greatest Common Factor (GCF) of 2324 and 23345 | | Greatest Common Factor (GCF) of 3 and 2 | | Greatest Common Factor (GCF) of 6 and 15 | | Greatest Common Factor (GCF) of 78 and 12 | | Greatest Common Factor (GCF) of 90 and 112 | | Greatest Common Factor (GCF) of 17 and 51 | | Greatest Common Factor (GCF) of 8 and 24 | | Greatest Common Factor (GCF) of 15 and 20 | | Greatest Common Factor (GCF) of 10 and 12 | | Greatest Common Factor (GCF) of 20 and 35 | | Greatest Common Factor (GCF) of 24 and 48 | | Greatest Common Factor (GCF) of 30 and 120 | | Greatest Common Factor (GCF) of 24 and 3 | | Greatest Common Factor (GCF) of 64 and 125 | | Greatest Common Factor (GCF) of 27 and 8 | | Greatest Common Factor (GCF) of 72 and 36 | | Greatest Common Factor (GCF) of 24 and 60 | | Greatest Common Factor (GCF) of 3 and 45 | | Greatest Common Factor (GCF) of 48 and 30 | | Greatest Common Factor (GCF) of 30 and 4 | | Greatest Common Factor (GCF) of 7 and 14 | | Greatest Common Factor (GCF) of 60 and 24 | | Greatest Common Factor (GCF) of 63 and 6 | | Greatest Common Factor (GCF) of 18 and 27 | | Greatest Common Factor (GCF) of 18 and 36 | | Greatest Common Factor (GCF) of 80 and 200 | | Greatest Common Factor (GCF) of 60 and 40 |