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To get the Greates Common Factor (GCF) of 210 and 963 we need to factor each value first and then we choose all the copies of factors and multiply them:
|210: ||2||3|| ||5||7|| |
|963: || ||3||3|| || ||107|
|GCF: || ||3|| || || || |
The Greates Common Factor (GCF) is: 3