Successfully pulling off the tablecloth trick can require a lot of trial and error, spilt drinks, and broken glass. Can you master it a smarter way?
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In a tracing puzzle, you can’t lift your writing tool or go over a segment twice. This triangle is impossible, but is tracing it impossible, too?
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Similar triangles can often hide in unexpected places. Could they help with this challenge?
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In multi-level mobiles, weights on one level can affect another. Can you salvage this mobile, or is it unavoidably unbalanced?
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With some reasoning, you can find a shortcut for the final digit of this multiplication problem.
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Finding the probability of a single die roll is pretty simple. But what happens when more than one die is involved?
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This cryptogram has multiple solutions, but that doesn't mean every digit changes in every solution. Which digits never change?
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