The factors of 18 are:
1, 2, 3, 6, 9, 18
The factors of 40 are:
1, 2, 4, 5, 8, 10, 20, 40
1 and 2
The common factors are: 1, 5.
25
1, 2, 4 and 8
Common factors of 20, 25, and 40 are: 1 and 5.
8 is the greatest common factor while 4 and 2 both are factors
The factors of 21 are: 1, 3, 7, 21 | The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
8
The GCF is: 2
The GCF is 5.
The GCF is: 20
1