Where X divides by Y on the set A = {1,2,3,6,10,15,30}
The answer I've been given in this example was:
30
/ | \
10 6 15
|\
2 3
|
1
Why doesn't the 2 link to the 10 or the 3 link to the 15? Was the example answer I was given wrong, or is there some reason for these not to be joined?