A 5-digit PIN number is selected. What it the probability that there are no repeated digits
+23246 The first digit can be any of the ten digits: 10 / 10
The second digit can be any digit except of the first number: 9 / 10
The third digit can be any digit except either of the first two: 8 / 10
The fourth digit can be any digit not previously chosen: 7 / 10
The last digit can be any digit except those already chosen: 6 / 10
The final probability is the result of multiplying these probabilities:
(10 / 10) x (9 / 10) x (8 / 10) x (7 / 10) x (6 / 10) =
