That’s the puzzler posed on this post at Mental Floss. And here’s what to do with that stack of cards: Why, build a level three Menger Sponge, of course! What the heck is a Menger Sponge? Glad you ...
Davidson College was one of more than 20 sites engaged in a global effort to create the world’s largest model of a MegaMenger sponge, built out of business cards. But, like several of the sites ...
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