Tee Town has a strange tradition. Everyone in the town wears a t-shirt of one of the three colours: Blue, Red and Yellow. Whenever two people wearing different coloured t-shirts meet they both change to the t-shirt of the third colour. They do not change the colour of their t-shirt in any other condition. At some point of time you observe the following configuration: Number of people in Blue t-shirts is 23 Number of people in Red t-shirts is 25 Number of people in Yellow t-shirts is 21 Is it possible to reach a situation where everyone is wearing the same coloured t-shirt? Why or why not? |
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