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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.)

  

 

Optical Illusion Eye .

 

Ilusion óptica

Stare at the center point for a few seconds and then move the head in front and back.

 

Is the image remains fixed ? Turn right? On the left?