On this site you'll find lots of
logic puzzles and riddles,
puzzling riddles,
science puzzles
and
math puzzles and riddles.
Answers and detailed solutions are included.
Do you know other nice brain teasers, riddles or puzzles that should be on the site?
If that's the case, send a message to pzzls!
Also having birthday today? - math puzzle of the day
![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)
Out of how many people should a group at least consist in order to have that the probability that two persons out of that group are having birthday on the same day, is larger than 1/2? |
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Pzzls top 10
Pzzl
Category
Difficulty
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)
math 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)
3. Lockers
math 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)
logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
5. Sky theory
science 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)
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)
7. The superstitious president
logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
math puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
10. Planting trees
logic puzzle
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)
![difficulty](http://www.nuin.nl/rdzl/assets/images/star_yellow.png)