Question

For a certain computer program a password must be exactly 5 characters long. The first character must be a mnber 0-8, the second, third and fourth character can either be one of the 26 letters or a number 0-5, the fifth character has to be exactly the same as the second character.

A. How many possible passwords are there?

B. What is the probability of someone guessing your password on the first try?

Answer 1

A. 294912