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. 7


We have twelve apparently identical coins, but one of them has a slightly higher weight.
Using a pan balance and with only three heavy find different currency

 


 

Solution
We put four coins in a dish and four in the other, if the scale is balanced know that the heaviest is between we have not put in the balance and if not it will be on the pan to tilt this , we know that heavier coin is in a group of four , of which we put two in each dish , do this once more with the group of the two tilt the balance and we know which is the heaviest .