Permutation questions- urgent help needed

pckeller
Thu, 24 Jan 2013 12:29:15 +0000

@CTScoutmom --

Alas, not so fast! You answered for how many 8-letter codes with the vowels in front. But I’m asking for 2-letter codes where the letters are taken from the first 8 of the alphabet, no repeating allowed and vowels not allowed to come after consonants.

So AE is allowed. AB is allowed. BA is not allowed.