Divide by three.
4, 4/3, 4/9
The next number in the series 4-12-6-12-36-18-36.. is 108.
Divide by three. 4, 4/3, 4/9
108
108
108
108
12The next number in the sequence is the previous # divided by 3. So, 324/3 = 108; 108/3 = 36; 36/3 = 12
108
108
12
10 thought it was 108
The GCF for 36 48 108 is 12.