1 is the GCF of 4, 9 and 18. 4 and 9 between them have not got a common factor aside from 1. This dictates that 1 is the GCF.
The GCF of 18, 4 and 27 is 1. I saw this straight away as 4 only has factors of 4, 2 and 1. 4 or 2 don't go into 27. Therefore the GCF has to be 1.
The GCF, or greatest common factor, of 18 and 63 would be 9.
The GCF of 9, 12, and 18 is 3.
The GCF of 18 and 9 is 9.Since 9 is a factor of 18, it is automatically the GCF.
The greatest common factor of 36, 81 and 18 is 9
The GCF is 9.
The GCF of 18, 4 and 27 is 1. I saw this straight away as 4 only has factors of 4, 2 and 1. 4 or 2 don't go into 27. Therefore the GCF has to be 1.
The GCF is 9.
Since 9 is a factor of 18, it is automatically the GCF.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF, or greatest common factor, of 18 and 63 would be 9.
Since 9 is a factor of 18, it is automatically the GCF.