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Domino Match

Age 14 to 16 Short
Challenge Level


A standard set of dominoes has numbers from 1 to 6, and blanks, arranged so that every number appears once with each other number, and once with itself (the doubles).

Two dominoes are chosen from the set at random. What is the probability that they 'match' - that is, that one end of one matches at least one end of the other?


This problem is taken from 1000 Problems to Enjoy
You can find more short problems, arranged by curriculum topic, in our short problems collection.