Answer:
55440 codes.
Step-by-step explanation:
There are 11 characters to choose from and the codes is 5 characters long.
The total number of possible codes is the number of permutations of 5 from 11
= 11P5
= 11! / (11 - 5)!
= 11! / 6!
= 11*10*9*8*7
= 55440.