Here's another one, if you take 1/7, or 2/7, ... 6/7 or any N from 1 ... 6 divided by 7 none of the repeating decimals 0.142857... which are in 6 different orders from the 1 ... 6 there are no 3, 6, or 9, but the other 6 (or 7) digits. This is because 7 is heaven and 3, 6, and 9 are of hell! "joking"