Did you solve it? Carl Friedrich Gauss, money saving expert
by Alex Bellos from Science | The Guardian on (#5KMAS)
The answers to today's puzzles
Earlier today I set you the following two puzzles, inspired by a money-saving trick devised by Carl Friedrich Gauss. (Click to the original for the explanation of the trick, and what it has got to do with Gauss).
1. The double bill.
Continue reading...