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 at the beginning of a long hallway that has three switches; at the end of the hallway there is a room with a closed door.

One of the switches turns on the light of the room, which is turned off.

How could he know which switch turns on the light if he just went through the hallway once?

Hint: The man has a flashlight.

 

SOLUTION