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# Domino Match

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?

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Age 14 to 16

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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?

You can find more short problems, arranged by curriculum topic, in our short problems collection.

Everthing you have always wanted to do with dominoes! Some of these games are good for practising your mental calculation skills, and some are good for your reasoning skills.

An ordinary set of dominoes can be laid out as a 7 by 4 magic rectangle in which all the spots in all the columns add to 24, while those in the rows add to 42. Try it! Now try the magic square...