perplexus.info :: General : Flat Out

Flat Out (Posted on 2003-12-17)

What is the minimum number of pennies that can be placed upon a table so that each penny touches three, and only three, others?

(All the pennies must lie flat on the table.)

See The Solution Submitted by DJ

Rating: 4.3333 (9 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Isn't this kind of easy?

| Comment 6 of 24 |

Correct me if I'm wrong, but isn't it 4? Just put the pennies in a square right? Like this:

oo
oo

Ummm...

Posted by sargon on 2003-12-18 01:07:17

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