How Many Tiles And Dots Are In A Dominoes Set?

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How Many Tiles and Dots Are In A Dominoes Set?

Dominoes FAQ

Standard 6x6 Domino Set

The number of tiles in a dominoes set is calculated by the following formula (where n is the highest number on a domino, e.g. "6" for a double-six set):

number of tiles = ((n2 + (3 * n) + 2) / 2)

The number of dots (pips) in a dominoes set is calculated by the following formula (again, n is the highest number on a domino):

number of dots = ((n3) / 2) + ((3 * n2) / 2) + n

This also works out to a much easier formula:

number of dots = number of tiles * n

Here are the totals for all common domino sets, in a table:

Domino SetNumber of TilesNumber of Dots
Double Six (6-6)28168
Double Nine (9-9)55495
Double Twelve (12-12)911092
Double Fifteen (15-15)1362040
Double Eighteen (18-18)1903420

See Also

  • The Mathematics of Dominoes

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