Thursday, July 31, 2014

Chameleons and the island

 This is a riddle in the category logic riddles.

 On an island live 13 green, 15 yellow and 17 red chameleons.

When two chameleons of different colors meet, they both change into the third color (for example if a red one meets a yellow one, they both change into green).

Is there a sequence of pairwise meetings after which all chameleons have the same color?

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