Chapter III 

The port

You’ve found out that Frederik seems to work for the police at the port of Hamburg. You make your way to the port to check if Frederik might have been called to a police operation.

The lights in the office building are off and no one seems to be here. Since you had found a bunch of keys in Frederik’s pocket, you try them out. The keys have to be inserted into the electronic lock one after the other so that the alarm is not triggered.

To put the keys in the right order you have to find out which key belongs to the fifth position.

You can’t get any further?

First Hint

With a sequence of numbers you can solve this.

This hint will appear after 5 minutes.

Solution

Its the fibonacci sequence.
1-1-2-3-5-8-13-21-34

1+1=2
1+2=3 and so on

The solution will appear after 12 minutes.