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Readers balanced logical reasoning and mathematical insights to find phony coins with a double-pan balance scale.
Mathematical magic can seem like mind reading. Your job is to reveal the secret behind these four tricks.
A surprising new solution to Leonhard Euler’s famous “36 officers puzzle” offers a novel way of encoding quantum information.
The solution to our puzzle about Euler’s number explains why e pops up in situations that involve optimality.
The transcendental number π is as familiar as it is ubiquitous, but how does Euler’s number e transcend the ordinary?
How readers used their geometry skills to survive a dangerous puzzle.
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