WHO TOOK WHAT ?

Ineed three people (or ... 3 boxes) that I will call A, B and C, and 24 small things like 24 dominos...

Prepare three things, for example a pen, a key and a pencil-sharpener.

Atakes one domino, B takes two dominoes and C three dominoes.Are you ready ?

I'll guess what items EACH OF YOU HAS.Proceed as follows : each of you has to take more dominoes,

whoever has taken thepen takes one timewhat he/she already has (so his /her number is multiplied by 2).

whoever has taken thekey takes four timeswhat he/she already has (so his /her number is multiplied by 5).

whoever has taken thepencil-sharpener takes two timeswhat he/she already has (so his /her number is multiplied by 3).