yeah, thats true, because I AM the head marker's son, and only child.
My dad told me that we're all going to have to resit the paper, since what happenned was that the cleaner changed the exam wording, it was meant to say AT LEAST ONE, but it was too late and they had printed off 60 000 copies of the paper already, and didn't have enough paper to print off a fixed copy. Then there was massive argument between my dad and the other board of studies people about whether to keep the question or change it to what it suppoed to be. In the end, we decided to mail each school, telling the supervisors to inform the students of the change.
But the mail got delayed, as the printer had a paper jam and no one could fix it. We still thought it would make it on time, but all the mail got sent to our house instead, for some reason.