This bingo card has 20 words: Pumice, Clay, Quartzite, Tourmaline, Obsidian, Flint, Gneiss, Garnet, Basalt, Coal, Slate, Talc, Granite, Sandstone, Marble, Opal, Fluorite, Schist, Limestone and Meteorite.
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Learn how to conduct a bingo game.
With players vying for a you'll have to call about __ items before someone wins. There's a __% chance that a lucky player would win after calling __ items.
Tip: If you want your game to last longer (on average), add more unique words/images to it.