A triomino is in the shape of an equilateral triangle approximately 1 in on each side and approximately 0.25 in thick. Each point of the triangle has a number, and each triomino has a unique combination of numbers. With the 6 possible end values commonly seen, and with the additional condition that the 3 numbers do not decrease clockwise, there are 56 unique combinations, and thus the standard triomino set has 56 tiles. Larger sets are possible; including 6 as a possible end number would result in 84 tiles.

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