I am creating a random combination(code) for a client. I need to see what the total number of combinations there can be. Please let me know if I am using the wrong word Combination vs Permutations. Formula: 2 letters + 2 numbers + 2 letters example: TR12FR The random letters are taken from 24 values: ABCDEFGHJKLMNPQRSTUVWXYZ The random Numbers are taken from 8 Values: 23456789 Any help would be greatly appreciated. Thanks Ryan.