The key to the classic problem uses the harmonic series of 1 + 1/ 2 + 1/ 3 + 1/ 4 … sums logarithmically to infinity to create a "harmonic" stack of n bricks which extend out approximately 1/2 log n.

Your festive dinner is nearly at an end and just when you think you’re about to burst, out come the after-dinner mints. Instead of dicing with indigestion this year, why not try a spot of practical ...