## Task 1 - 280621

On the railway line from Pfiffigstadt to Knobelshausen, there are three more railway stations between these two towns: Adorf, Bedorf, and Cedorf.

In each of these five stations, you can buy tickets to each of the other stations. André owns exactly one ticket for each of these possible connections. He does not yet have any other tickets in his collection.

How many tickets does André have in total?

(Hint: Outbound and return journeys are considered different connections, but there are no combined "round-trip tickets".)
From each of the five places, there are exactly four train connections. Since all these train connections are different and André has exactly one ticket for each of them, he has a total of $5 \cdot 4=20$ tickets due to this.