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To get the Greates Common Factor (GCF) of 990 and 4983 we need to factor each value first and then we choose all the copies of factors and multiply them:
|990: ||2||3||3||5||11|| |
|4983: || ||3|| || ||11||151|
|GCF: || ||3|| || ||11|| |
The Greates Common Factor (GCF) is: 3 x 11 = 33