Question
A number is chosen at random from among all 5-digit numbers containing only the digits 1,2,3,4, and/or 5. Find the probability that the digits are all different.
Answers
Steve
There are 5^5 possible numbers
There are only 5! ways to arrange the digits with no repeats.
S, P = 5!/5^5
There are only 5! ways to arrange the digits with no repeats.
S, P = 5!/5^5