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        riddles >> easy >> 3 coins on a line
        
(Message started by: BNC on Jan 25^th, 2003, 12:02pm)

Title: 3 coins on a line
Post by BNC on Jan 25^th, 2003, 12:02pm

Add two coins to the seven coins shown, so that there will be 10 straight lines, 3 coins on each.

Code:

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Title: Re: 3 coins on a line
Post by Yvee on Jan 25^th, 2003, 12:59pm

[hide]

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// hidden by moderator

Title: Re: 3 coins on a line
Post by redPEPPER on Jan 25^th, 2003, 1:03pm

I got something but I don't know if it fits:
[hide]
Add a coin on the top row, between the two top coins. Pile the other coin on the middle coin. This way you have a square with one "open" side (the bottom side). The three remaining sides have three coins each, and from the center to the other 7 coins you can draw 7 segments of three coins each. But these would be segments, not really lines. The lines would actually contain 4 coins so I don't know if that fits the riddle.[/hide]

Edit: Just saw Yvee's solution. Probably fits better than mine. I actually thought about something like that but I forgot to count two lines and discarded it. Funny how I needed to see it posted by someone else to find the remaining lines.