In this we see the genius of the entire book: Silver is able to appeal to those who are both mathematically and non-mathematically inclined, building a compelling story as to why both types of reader should be interested in the better quantification and understanding of the probability of the events that surround us every day.
After all the submissions are in, we'll pick the best hack for each of the two gaming systems, publish the write-ups on Engadget, and open them up to reader voting (by submitting your hack you're giving us the non-exclusive right to publish it on the site).