Rowing - logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
1
11
21
1211
111221
312211
13112221
What number comes in the next row?
11
21
1211
111221
312211
13112221
What number comes in the next row?
Nails - logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
How can you put (without using glue or something like that) ten nails on the head of a standing nail? The final construction should be stable. |
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Matches - logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![matches](http://www.pzzls.com/images/lucifers.gif)
Suppose you have five matches. How can you form the number sixteen with them?