1.  36 = 2*2*3*3
2.  180= 2*2*3*3*5

Find the greatest common factor for the two given numbers. 
3.  20, 24 
20 = 2*2*5  and 24 = 2*2*2*3 from which we see 2*2 = 4 is the common factor
4.  120, 96
120 = 2*2*2*3*5
96 = 2*2*2*2*2*3 The GCG is 24.
Back