With a bachelors completed, a sense of “what now” quickly settles in and a masters degree is a logical next step. After graduation, the Open University (OU) was quick to respond to tweets:
Struggled to get my head around Euler problem 15:
Starting at the top left of a 20×20 grid and only moving right and down, how many routes are there?
I figured that this was a combinatorics problem but couldn’t see what to count or choose from.