The Trick Is in the Representation

This article is about several mathematical puzzles which will sharpen your reasoning. There will be several well-known ones, such as the Monty Hall problem, but also lesser-known ones, such as the mechanical scale and the balls. Each answer will be detailed. The lake and the water lily We have a lake and some water lilies on it. We know that the number of water lilies doubles every day and that on the 48th day, half of the lake is covered by water lilies. Copy ----------- |XXXXX | |XXXXX | |XXXXX | ----------- Now the question is: on which day will the lake be fully covered by water lilies? The reasoning is simple, indeed we know that each water lily doubles within a day. Also, doubling half of something gives you…