<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by cnk:
Are there any airline codes where both digits are numbers? (e.g., "33") If that's not allowed, then there are fewer than 1092 combinations. </font>
That was condition (1) in my post above. I subtracted out the 64 because that's how many codes involving the eight available digits would be forbidden.
<font face="Verdana, Arial, Helvetica, sans-serif" size="2">I've always wondered why Southwest is WN. Anyone know? I imagine this is an easy question for the experts here.
</font>
Who k
Nows?