G-Research Quantitative Analyst interview questions

I got an "interview" through a recruitment agent, who informed me that the process was a written exam, then if you pass you go to a formal interview. I do not have a background in economics etc. so did not pass, so did not get a real interview. The people seemed nice, but they are clearly not interested in training people, so if you don't know the sorts of questions they have on their website don't bother. Besides, they don't offer to pay travel expenses.

Given a 90 minute exam straight away on arrival. It was a mixture of maths, probability and computing topics. It was very tough and I had not prepared enough so I was shown the door as soon as I finished it. For those that pass, I believe it leads to several more face to face interviews that day.