| 摘要 |
Discs bearing markings or other indicators that differentiate them from each other are used to randomly select one of a number of possible outcomes. The discs may thus be used to introduce an element of chance in games. Each disc has two sides, one of which is marked with a number. The discs are grouped into sets. The number marked on each disc in a set is the same as that of all other discs in that set, but is different from that of all discs in other sets. To use the discs to randomly select an outcome, a person stacks all the discs on top of one another. The person then upsets the stack by tossing a heavier or larger disc at the stack. After the stack topples, the person counts the number of discs in each set that have come to rest in an orientation either with the number-side facing upwardly or, alternatively, with the number-side facing downwardly.
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