| 摘要 |
A number-selection ball for a number-selection type lottery in which a plurality of designated numbers are selected to determine the amount of prize money. Realization of a ball, which can use a means for selecting target numbers together with a means capable of utilizing contingency, can be attained. Furthermore, the number-selection ball may be utilizable for other games. The number-selection ball can be realized by a surface-treated ball (1a) having printed thereon a circle (1b) around a row of numbers or letters and a row (1c) of numbers or letters.
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