Common factors of 28 and 30 are: 1 and 2.
1, 2, 3 and 6
5
120
The common factors of 28 and 84 are 1,2,4,7,14 and 28
The common factors of 28 and 84 are 1,2,4,7,14 and 28.
6
The LCM is: 150
The GCF is 10.
I believe its 15.
90
The GCF is 5.
The GCF is 15.