5 weeks 52 min
Enigma 6 resolved : Core on deck !
Submitted by Jean-Luc Berenguer on Fri, 01/11/2013 - 19:07
Seven rocks cores from the ocean floor…
among them a sediment core less dense than the others hard rocks cores …
How to find it using the balance only two times ?
A enigma that can be solved as follows (see attached) :