Marbles

Problem | Solution | Printable page |
Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2
A red marble, a green marble and a blue marble

I start with 3 marbles, one red, one green and one blue.
I can trade any one marble for two others, one each of the other two colours.

Is it possible to make a number of such trades and end up with five more blue marbles than red?
I don't care how many green marbles I have at the end.


After this problem you may like to take a look at More Marbles

Published January 1998.