This week the topic was exponential growth, and pension investments. We interviewed Simon Perera from Lane, Clark & Peacock about his work as an actuary, what an actuary is and how it involves predicting the growth of investments.
Puzzle: James has 250 friends on Facebook. He sees a really funny photo and sends it to two of his friends. The next day, each of those friends sends it to two of James’ other friends who haven't seen it yet. If this repeats, how many days will it take (including the first day on which James originally sent the photo) until all of James friends have seen it?