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To get the Greates Common Factor (GCF) of 374 and 220 we need to factor each value first and then we choose all the copies of factors and multiply them:
|374: ||2|| || ||11||17|
|220: ||2||2||5||11|| |
|GCF: ||2|| || ||11|| |
The Greates Common Factor (GCF) is: 2 x 11 = 22