Question

when picking out a username for a computer game the user chooses two digits followed by three letters. if letters and digits cannot be repeated how many usernames are possible??

Answer 1

so u have 9 * 8 then letters 26*25*24 = answer

Answer 2

10 * 9 * 26 * 25 * 24

Answer 3

so its 72 /15600
?

Answer 4

u times everything sorry for any confusion

Answer 5

digit * digit * letter * letter* letter

Answer 6

so just 72 *15600 = answer

Answer 7

unless you don't want the first digit to be 0, but there is no restriction. So it should be 10*9*26*25*24