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.
Dominoes (or dominos) is a game played with rectangular domino tiles. The domino gaming pieces make up a domino set, sometimes called a deck or pack. The traditional Sino-European domino set consists of 28 dominoes, colloquially nicknamed bones, cards, tiles, tickets, stones, or spinners.Each domino is a rectangular tile with a line dividing its face into two square ends.ach end is marked with a number of spots (also called pips, nips, or dobs) or is blank. The backs of the dominoes in a set are indistinguishable, either blank or having some common design. A domino set is a generic gaming device, similar to playing cards or dice, in that a variety of games can be played with a set.