It was horribly translated, every sentence was written like something this: "A and B are two broters/sisters. A gives B 3 apples and he/she/them eats one and returns one to he/she/them…" at some point one section had the instructions wrong so I did all the questions wrong. There was no way to change the language or re-read the instructions to try to understand what the original text might have actually been.

That's when I closed the tab.

I'm a Debian Developer.