Math
posted by Wendy .
A 3 digit code can be made using the numbers 6,7,8,9, or 0? If repetition is not allowed, how many different codes are possible?

codes=(5)(4)(3) that is if zero is allowed to be a leading digit.
posted by Wendy .
A 3 digit code can be made using the numbers 6,7,8,9, or 0? If repetition is not allowed, how many different codes are possible?
codes=(5)(4)(3) that is if zero is allowed to be a leading digit.