Equal: Every domino half in this space must be the same number of pips.
NNNP(all in semicircle)P(\text{all in semicircle})P(all in semicircle)Decimal22/2=12/2 = 12/2=1100%33/43/43/475%44/8=1/24/8 = 1/24/8=1/250%55/165/165/1631.25%66/32=3/166/32 = 3/166/32=3/1618.75%1010/51210/51210/5121.95%
，更多细节参见同城约会
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