On Sat, 15 Jun 1996, Bad Mr. Frosty wrote:

At 01:49 PM 6/15/96 -0300, Philip Mak wrote:

This is easy... place the first 4 coins like this

oo
oo

Then put the 5th coin on top of them in the middle and each coin touches 
all the others.

Sorry, that only works with square coins.

What do you mean it only works with square coins??? I mean you can place 
four circular coins like that so that they touch each other. Then you 
just put the fifth one on top.
OO
OO (just imagine moving the coins closer together)