Twenty metal blocks are of the same size and external appearance; some are aluminum
, and the rest are duraluminum
, which is heavier.
Using a pan balance to determine how many blocks are aluminum, what is the minimum number of weighings to be done?
(In reply to re(2): Thoughts, spoiler?
by Erik O.)
Ok, I just wanted to make sure I wasn't missing an "obvious" step.
Posted by ajosin
on 2005-06-06 18:45:40