Example
There are 5 marbles in a jar: 2 are blue, 3 are red.
A blue marble has a black dot on it while the other one does not.
Two of the red marbles are marked with a dot.
There are 5 marbles in a jar: 2 are blue, 3 are red.
A blue marble has a black dot on it while the other one does not.
Two of the red marbles are marked with a dot.