A tank of water has two holes of equal area, one at top and one at bottom. The top one leads to a downspout, so that both holes discharge their water at the same level. Ignoring friction, which hole produces the faster flow of water?
[solution available at Futility Closet link; please comment with guesses and not spoilers]
Can I say that this is a famous puzzle related to a famous mathematician who has a programming language named after him? Or would that be a spoiler?
No I can't because Pascal didn't have a famous cup. Another Mathematician starting with P did though....