1 Your oranges should be washed before peeling or cutting. Wet each orange with water, rub its surface, rinse it with running water and dry it with a clean towel.  Washing oranges in a sink filled with water is not recommended since the standing water can spread contamination from one orange to another. The use of soap or detergent is not recommended because the fruit can absorb detergent residues. Consider a dip in clear white vinegar as an added precaution.
The most common domino sets commercially available are double six (with 28 tiles) and double nine (with 55 tiles). Larger sets exist and are popular for games involving several players or for players looking for long domino games. The number of tiles in a set has the formula 12(n + 1)(n + 2) for a double-n set.
(For a faster game with 2 to 4. players, use a double-9 set, or remove the 36 tiles with 10 or more pips from a double-12 set.) Object of the Game. Be the first to play all of your dominoes, or at least as many high-point dominoes as possible, in each. round.