The greatest common factor (GCF) of 75 and 1000 is 25.
The GCF is 75.
If you mean 300 and 450 then the GCF is 150
The GCF is 75.
The GCF is 75.
The GCF is 75.
The GCF is 75.
The GCF is 75.
The GCF is 15.
The GCF is 1.
The GCF is 1.
The GCF is 25.
The GCF is 75.