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 Topic: dominos
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 Dominos 2001-04-28 From Mark:A standard dominoe set consists of 28 pieces, from double-zero to double-six Is it possible to arrange all those pieces in a straight line in such a way that the dots of any pair of adjacent pieces match? Please include picture Is it possible to arrange them in a circle and still meet the conditions in 1? Answered by Claude Tardif. Triminoes 1998-09-09 From Roxanne Hale:I am doing an investigation about a game called triminoes (like dominoes). The game is played using triangular pieces of card. Each card has 3 numbers on it. I have to investigate the relationship between the number of trimino cards in a set and the largest number on the cards. I found; largest no. used 0 1 2 3 4 no. of trimino cards 1 4 10 20 35 I was ginen the formula for this which is: UN= UN - 1 + 1/2 (n + 1 ) (n+2) UN=no. of trimino cards n= largest no. I don't know how to get to this equation I think it has something to do with triangle numbers!Answered by Penny Nom.

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