They have a 'beer round', which is not part of the main quiz but comes in the middle. We were one of only three teams to get all six questions right, but unfortunately we didn't ace the tie-break, which was:
"How many different five-card hands are there in a game of poker played with a 52-card deck?"
My heart sank. Because I'm the maths specialist on the team and I knew exactly what I had to do, but couldn't remember exactly what the 'X choose Y' formula was. 'Something factorial over something else factorial' was as far as I could remember after several pints*. So I took a (not bad) guess, thinking close might be good enough.
It says something about the quality of the competition, I think, that both other teams got it exactly right (2,598,960).
Never mind: we'll be back. :o)
* Tbh, though, I'm not sure I would have been able to work out 52!/5!47! or even the (n-(k-1)) etc. version with pen and paper in time from scratch anyway. I suspect the other teams may have known it as a fact. I shall certainly be burning the number into my memory for future reference...