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.

 


 

Solution:


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 .