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The GCF is 1.
gcf of 1 and 2 is 1.
The GCF is: 1
15=1*3*5 40=1*2*2*2*5 gcf=5
The GCF is.... 1 !
The greatest common factor of the numbers 11 and 19 is 1.
The GCF of 4 and 10 is 2.
The GCF is 2.