Riddle me this...

Someone asked me this yesterday, and its been driving me nuts. :crazy::crazy:

You have 79 identical coins. 1 is heavier than the others, but exactly the same in all other respects. You have a balance scale that you can use 4 times to produce the heavy coin. You cant add any coins. What do you do?

u grab the scale and smash it into the head of whoever told u that riddle.

http://home.att.net/~numericana/answ...g.htm#weighing

probably something like the method above, but more steps as you have 79 marbles and 4 tries.

Thanks. God bless the internet. :D