Mathematical puzzles

Puzzles, situation puzzles and recreational mathematics.

situation puzzles and recreational mathematics. Neuron juice

Neuron juice.

The important thing is not to stop questioning. (Albert Einstein.)

Math Puzzles

In this site you can find a selection of the most popular riddles and situation puzzles. Obviously, neither are here all who matter nor they matter all who are here. Some of them have been taken from the missing Snark list; others from books and other have been on my mind for a long time.


Every suggestion will be appreciated and included in this list.


Two of the riddles deserve special treatment, The riddle of the ages and the piano student is the one I always propose as a challenge. The other one is "Einstein's puzzle"  —if you don't know it yet, I highly recommend it.


Riddles and situation puzzles are mixed because of the difficulty of dividing them correctly into two independent groups, as some of them could be included in both groups.




1.- A shepherd needs to take a wolf, a goat and a lettuce to the opposite bank of the river. He has a boat where he just fits along with one of the other things. If the wolf is left alone with the goat it will eat it; if the goat is left alone with the lettuce it will eat it. How should he do it?






Einstein 's puzzle


When Einstein proposed this conundrum said 98 % of the world population would not be able to solve it.

Personally I think it's not so difficult to find the solution, it is only a matter of time and dedication , anyway you can see it.

The riddle goes like this:

There are 5 houses in five different colors and each a person of a different nationality lives.
Each of the owners drink a different drink , smoke a different brand of cigarettes and has a different pet.

We have the following keys:

  • The Brit lives in the red house .
  • The Swede has a dog.
  • The Danish drinks tea .
  • The green house is on the left of the white .
  • The owner of the green house drinks coffee.
  • The person who smokes Pall Mall has a bird .
  • The owner of the yellow house smokes Dunhill.
  • living in the center house drinks milk .
  • The Norwegian lives in the first house.
  • The person who smokes Brends lives next to the one who keeps cats .
  • The person who has a horse lives next to the man who smokes Dunhill .
  • The smoking Bluemasters drink beer .
  • The German smokes prince .
  • The Norwegian lives next to the blue house.
  • The smoking Brends has a neighbor who drinks water .


And finally the question:

Who owns the goldfish ?