You are off here a bit. ALL decimal, base 12 and base 60 expansions of rational numbers end in a repeating sequence. Just like base 11 and 59. The only differ

You are off here a bit. ALL decimal, base 12 and base 60 expansions of rational numbers end in a repeating sequence. Just like base 11 and 59. The only difference between 1/7 and 1/5 in decimal is that for the 1/7, the repeating sequence is 7 digits long (142857) and for 1/5 the repeating sequence is 1 digit long (0). In base 12, 1/5 has a 4 digit repeating sequence (2497).