eklhad@ihnet.UUCP (K. A. Dahlke) (02/17/85)
< 3792156048 > Since I haven't seen anything resembling a puzzle in quite a while, here is one. How many permutations of the digits 0-9 have no digits in common with the identity permutation (0123456789)? Examples: 2317495680 cannot be counted, since 4 and 8 are in the correct position. 9876543210 is included, since no digit is in the correct position. A numerical answer will do. If you feel ambitious, try 26 letters (a-z) rather than 10 digits. -- Having, is not so pleasing a thing after all, as wanting. It is not logical, but it is often true. Karl Dahlke ihnp4!ihnet!eklhad