WTW Quantitative Analyst interview questions

The interview was in London. The interviewers were one young lady and a young man. They asked me to write a pseudo code on a piece of paper which sounded difficult and odd to me. The interview took around 1.5 hours.

I had two interviews with Willis Towers Watson, the first one went on very well, the interviewers are very friendly and encouraging. I been ask one logical question one math question and one coding question. The final interview was tough.