| 摘要 |
A mathematical game apparatus comprised of a panel having consecutive numerals disposed thereon, and further including a plurality of removable masks for obscuring selective consecutive ones of the numerals. A plurality of groups of predetermined numbers are included in the apparatus, so that one may select any one numeral appearing on the panel, and another player can determine the selected numeral by placing one or more certain mask corresponding to certain groups onto the panel so as to obscure consecutive numerals thereon. The last obscured numeral is the selected numeral.
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