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.)





11. The warden of a prison reports that let out of prison to a random person to celebrate 25 who is warden ago.

Choose a man and tell him to stay free if out of a box within a white ball , having within nine black balls and 1 white only .

The prisoner learns on a tip that the warden put all the black balls , the next day he makes the game , and the prisoner goes free .

How he has gotten out of prison if all the balls were black ?


The prisoner to get the ball , looks , saves no one sees and says it is white .

Teach it , says the warden , to which he answered : It is not necessary , look at the rest of the balls , the white is not in the box is mine.