number them 1 to 5.... and take..
ok.. you got my answer. let others try
ok.. you got my answer. let others try
IMO, you don't even need to number them 1 to 5.
@vssoma
Is the weight scale like this http://en.wikipedia.org/wiki/File:Bascula_9.jpg ? If yes, then you have to put 2 boxes on each side of the balance. If they are in equilibrium then it means that the remaining 5th box is the one with 9g marbles in it. If they are not, then whichever side is up on the scale i.e. the lighter side, has the box with 9g marbles + one box with 10g marbles.