Question 1190644
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A hacker is trying to guess someone's password. The hacker knows (somehow) that the password is 4 digits long, 
and that each digit could be a number between 0 and 3 {{{highlight(inclusive)}}}. 
Assume that the hacker makes random guesses. What is the probability that the hacker guesses the password on her first try? 
Round to six decimal places.
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<pre>
There are  {{{4^4}}}  different codes of 4 digits long with the digits from 0 to 3 inclusive.

They are equally likely and only one of these codes works.


So the probability under the question is  {{{1/4^4}}} = {{{1/256}}} = 0.003906  (rounded to six decimal places).    <U>ANSWER</U>
</pre>

Solved.