#TopScoreTuesday! This week’s Top Scorer is Paul Mattson, from Chanhassen, MN. Paul graduated school from Bloomington Jefferson in 1994 and the University of Minnesota in 1998. He received a B.S. in mathematics from the Institute of Technology and a B.S. in economics from the College of Liberal Arts.

See more info here for the Spirit of Ramanujan Talent Initiative!

Q: What is a fun fact about yourself?

A:

I was an actuary right out of school and eventually earned my Fellowship in the Society of Actuaries, though I am no longer active as an actuary.Q: How did you discover Expii?

A:

I discovered Expii Solve through a link from 538’s Riddler, which I discovered after following 538 on Twitter.

Q: How do you use Expii?A:

Doing the problems is recreation for me. It is fun to learn branches of mathematics that I have not been exposed to in depth before, from spherical geometry to combinatorics.

Q: What is your math background?A:

When I was younger I was involved in math competitions, winning various statewide competitions between 7^{th}and 12^{th}grades. I enjoyed competing on the state’s ARML team.

Q: What is your favorite area of math?A: My favorite area of math is probability and statistics.

Q: Anything else yo would like to share about yourself?

A: Now I work as a “quant” trader for an option market maker. I develop algorithms to price and trade options and other financial derivatives. There is plenty of probability and statistics involved. Option prices essentially imply a continually changing probability distribution for the underlying asset at some future point in time. I use statistics when exploring historical data to identify market inefficiencies that are used to execute trades with good risk/reward characteristics.