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.)

Riddle. 4.


A man is the beginning of a long corridor that has three switches, the end is a room with the door closed.

One of these three switches turns on the light in that room , which is initially off.

How did it to know which switch turns the light traveling once the route of the corridor ?

Hint: The man has a flashlight.




At the beginning of the corridor there are three switches , A, B and C , our character press the switch A, wait 10 minutes , turn it off , press the B and crosses the hall.

When you open the door you can find three situations :


  • If the light is on will be the B button .
  • If the light is off and the hot bulb is the A.
  • If this off and be the cold lamp C .