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| 81: | 3 | 3 | 3 | 3 | |
| 99: | 3 | 3 | 11 | ||
| GCF: | 3 | 3 |
The Greates Common Factor (GCF) is: 3 x 3 = 9
| Greatest Common Factor (GCF) of 135 and 216 | | Greatest Common Factor (GCF) of 90 and 160 | | Greatest Common Factor (GCF) of 75 and 200 | | Greatest Common Factor (GCF) of 57 and 27 | | Greatest Common Factor (GCF) of 305 and 15 | | Greatest Common Factor (GCF) of 84 and 252 | | Greatest Common Factor (GCF) of 18 and 57 | | Greatest Common Factor (GCF) of 64 and 38 | | Greatest Common Factor (GCF) of 94 and 88 | | Greatest Common Factor (GCF) of 660 and 1155 | | Greatest Common Factor (GCF) of 108 and 198 | | Greatest Common Factor (GCF) of 25 and 64 | | Greatest Common Factor (GCF) of 49 and 112 | | Greatest Common Factor (GCF) of 81 and 72 | | Greatest Common Factor (GCF) of 480 and 56 | | Greatest Common Factor (GCF) of 321 and 462 | | Greatest Common Factor (GCF) of 14 and 17 | | Greatest Common Factor (GCF) of 84 and 105 | | Greatest Common Factor (GCF) of 210 and 252 | | Greatest Common Factor (GCF) of 57 and 64 | | Greatest Common Factor (GCF) of 239 and 174 | | Greatest Common Factor (GCF) of 956 and 696 | | Greatest Common Factor (GCF) of 145 and 116 | | Greatest Common Factor (GCF) of 176 and 48 | | Greatest Common Factor (GCF) of 39 and 91 | | Greatest Common Factor (GCF) of 189 and 138 | | Greatest Common Factor (GCF) of 151 and 58 | | Greatest Common Factor (GCF) of 65 and 112 | | Greatest Common Factor (GCF) of 144 and 264 | | Greatest Common Factor (GCF) of 170 and 68 | | Greatest Common Factor (GCF) of 156 and 44 | | Greatest Common Factor (GCF) of 75 and 285 |