16 Coins
Logic puzzles require you to think. You will have to be logical in your reasoning.
Johnny was given 16 coins by his older, somewhat meaner brother, Mark. He told him that he could keep them all if he could place all 16 on the table in such a way that they formed 15 rows with 4 coins in each row.
After 10 minutes, Johnny walked away with the coins and Mark, after complaining futilely to his mother, left with nothing.
How did Johnny place the coins?
After 10 minutes, Johnny walked away with the coins and Mark, after complaining futilely to his mother, left with nothing.
How did Johnny place the coins?
Comments
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Posted by scallio on Sep 28, 2006 Too tough! I loved it, but I didn't get it even with the clue. And I hate using the clues in the first place!  Great teaser!  |
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Posted by Pizzazz2u on Sep 28, 2006 I did look at the hint to get myself started.  I had a different possibility figured out, compared to your answer. It works on the same principal as your solution, but you will get 16 rows for 16 coins... with 4 coins in each row. I do suppose your answer is the correct one, though  Dynamic teaser and reasonably tough.  |
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Posted by tmking on Oct 07, 2006 LOL  I had almost this same problem on during a matth computition |
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Posted by Phalanx on Oct 09, 2006 damn, that was a tough one...! I had pentgrammas, pentagons arround the star, david stars and so on... put a star within a star... didn't think about that! Great! |
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Posted by qwertyopiusa on Nov 29, 2006 Brilliant! |
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Posted by qwertyopiusa on Nov 29, 2006 Pizzazz2u: Could you explain how you can get the 16 rows??? |
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Posted by jrg1612 on Dec 07, 2006 WOW!! you got me!!! one point for you |
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Posted by t4mt on Jan 03, 2007 It was clever, but the hint gave it away. |
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Posted by on Jan 19, 2009 It would be better if the problem read as "15 lines of 4 coins" instead of "15 rows of 4 coins". Would make it less ambiguous. |
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Posted by opqpop on Jan 30, 2010 Wow, I don't think I would have gotten this in a million years Very creative mind you got! |
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Posted by papiermeister on Dec 03, 2010 wow, that was hard! Would not have got it without the hint. Came to me after that, tho. Good one! |
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Posted by bradon182001 on Dec 03, 2010 Definitely needed the hint. Good teaser. |
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