Employees at a company are given a three digit employee identification code. If each digit cannot be repeated, how many different codes are possible?

Question

Please help.

Answer 1

if the lead digit can be a zero, there are
10x9x8 ways or 720
if the lead digit cannot be a zero, there are
9x9x8 or 648 ways

Answer 2

1000

Answer 3

equals 35

Answer 4

Do your own work

Answer 5

employees at a company are given a five digit employee identification code. if each digit cannot be repeated, how many different codes are possible?

Answer 6

I really need the answer for if it was a five digit code

Answer 7

shut up Jay Jay people need help